{"id":17902,"date":"2026-07-18T10:29:34","date_gmt":"2026-07-18T01:29:34","guid":{"rendered":"https:\/\/genai-ai.co.jp\/ai-kanri\/?p=17902"},"modified":"2026-07-18T10:29:34","modified_gmt":"2026-07-18T01:29:34","slug":"cc-css-bg-image","status":"publish","type":"post","link":"https:\/\/genai-ai.co.jp\/ai-kanri\/blog\/cc-css-bg-image\/","title":{"rendered":"\u30102026\u5e747\u6708\u6700\u65b0\u3011CSS\u306ebackground-image\u3068\u306f\uff1f\u4f7f\u3044\u65b9\u30fb\u30b5\u30a4\u30ba\u30fb\u4f4d\u7f6e\u30fb\u8907\u6570\u6307\u5b9a\u30fb\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u307e\u3067\u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"\n<style>\n.g-flow-row{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;}\n.g-flow-item{background:linear-gradient(135deg,#1a1a1a,#2a1015);color:#fff;border-radius:8px;padding:16px 14px;min-width:130px;flex:1;text-align:center;}\n.g-flow-arrow{color:#dc2626;font-size:20px;font-weight:700;}\n.g-card-row{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 32px;}\n.g-card-row>div{flex:1;min-width:220px;}\n@media(max-width:600px){\n  .g-flow-row{flex-direction:column;}\n  .g-flow-arrow{transform:rotate(90deg);}\n  .g-card-row{flex-direction:column;}\n  .g-card-row>div{min-width:100%;}\n}\n<\/style>\n\n\n\n<div style=\"margin:0 0 32px;\">\n  <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/07\/thumb-cc-css-bg-image.jpg\" alt=\"\u30102026\u5e747\u6708\u6700\u65b0\u3011CSS\u306ebackground-image\u3068\u306f\uff1f\u4f7f\u3044\u65b9\u30fb\u30b5\u30a4\u30ba\u30fb\u4f4d\u7f6e\u30fb\u8907\u6570\u6307\u5b9a\u30fb\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u307e\u3067\u5b8c\u5168\u30ac\u30a4\u30c9\" style=\"width:100%;height:auto;border-radius:12px;display:block;\">\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-radius:12px;padding:24px 28px;margin:0 0 32px;border-left:4px solid #dc2626;\">\n  <p style=\"font-size:15px;font-weight:700;color:#1a1a1a;margin:0 0 16px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9<\/p>\n  <ol style=\"margin:0;padding-left:20px;font-size:14px;line-height:2.2;list-style:none;\">\n    <li><a href=\"#sec-01\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">01<\/span>background-image\u3068\u306f\u2015\u2015CSS\u3067\u80cc\u666f\u753b\u50cf\u3092\u8a2d\u5b9a\u3059\u308b\u57fa\u790e<\/a><\/li>\n    <li><a href=\"#sec-02\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">02<\/span>background-repeat\u3067\u7e70\u308a\u8fd4\u3057\u3092\u5236\u5fa1\u3059\u308b<\/a><\/li>\n    <li><a href=\"#sec-03\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">03<\/span>background-size\u3067\u753b\u50cf\u30b5\u30a4\u30ba\u3092\u81ea\u5728\u306b\u8abf\u6574\u3059\u308b<\/a><\/li>\n    <li><a href=\"#sec-04\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">04<\/span>background-position\u3067\u4f4d\u7f6e\u3092\u5b8c\u5168\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/a><\/li>\n    <li><a href=\"#sec-05\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">05<\/span>\u8907\u6570\u80cc\u666f\u3068\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u91cd\u306d\u5408\u308f\u305b<\/a><\/li>\n    <li><a href=\"#sec-06\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">06<\/span>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30fb\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u306e\u5b9f\u8df5<\/a><\/li>\n    <li><a href=\"#sec-07\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">07<\/span>background\u4e00\u62ec\u6307\u5b9a\u3067\u30b3\u30fc\u30c9\u3092\u30b9\u30c3\u30ad\u30ea\u3055\u305b\u308b<\/a><\/li>\n    <li><a href=\"#sec-08\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">08<\/span>Claude Code\u3067CSS\u80cc\u666f\u8a2d\u5b9a\u3092\u81ea\u52d5\u5316\u3059\u308b<\/a><\/li>\n    <li><a href=\"#faq\" style=\"color:#495057;text-decoration:none;\"><span style=\"color:#dc2626;font-weight:700;margin-right:8px;\">FAQ<\/span>\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li>\n  <\/ol>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u300c\u80cc\u666f\u753b\u50cf\u3092\u8a2d\u5b9a\u3057\u305f\u306e\u306b\u8868\u793a\u3055\u308c\u306a\u3044\u300d\u300c\u753b\u50cf\u304c\u7e70\u308a\u8fd4\u3057\u3066\u8868\u793a\u3055\u308c\u3066\u3057\u307e\u3046\u300d\u300c\u30b9\u30de\u30db\u3067\u898b\u305f\u3089\u753b\u50cf\u304c\u5d29\u308c\u3066\u3044\u308b\u300d\u2014\u2014CSS\u306ebackground-image\u3092\u4f7f\u3046\u969b\u306b\u3088\u304f\u767a\u751f\u3059\u308b\u30c8\u30e9\u30d6\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CSS\u306e<code>background-image<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u3001Web\u30da\u30fc\u30b8\u306e\u8981\u7d20\u306b\u80cc\u666f\u753b\u50cf\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u5358\u7d14\u306a\u753b\u50cf\u306e\u914d\u7f6e\u304b\u3089\u3001\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u30fb\u8907\u6570\u753b\u50cf\u306e\u91cd\u306d\u5408\u308f\u305b\u30fb\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u306a\u8abf\u6574\u307e\u3067\u3001\u4f7f\u3044\u3053\u306a\u305b\u3070Web\u30c7\u30b6\u30a4\u30f3\u306e\u8868\u73fe\u529b\u304c\u683c\u6bb5\u306b\u5e83\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001background-image\u306e\u57fa\u672c\u69cb\u6587\u304b\u3089\u59cb\u3081\u3001background-size\u30fbbackground-position\u30fbbackground-repeat\u306a\u3069\u306e\u95a2\u9023\u30d7\u30ed\u30d1\u30c6\u30a3\u3001\u8907\u6570\u80cc\u666f\u30fb\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u6d3b\u7528\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u307e\u3067<strong>\u5b9f\u7528\u7684\u306a\u30b3\u30fc\u30c9\u4f8b\u4ed8\u304d\u3067\u4f53\u7cfb\u7684\u306b\u89e3\u8aac<\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">background-image\u306fCSS\u306e\u4e2d\u3067\u3082\u7279\u306b\u5965\u304c\u6df1\u3044\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3059\u3002\u300c\u753b\u50cf\u3092\u7f6e\u304f\u300d\u3060\u3051\u3067\u306a\u304f\u3001cover\/contain\u3067\u30b5\u30a4\u30ba\u3092\u5236\u5fa1\u3057\u3001position\u3067\u4e2d\u5fc3\u3092\u56fa\u5b9a\u3057\u3001\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u2014\u2014\u3053\u308c\u3092\u81ea\u5728\u306b\u4f7f\u3048\u308b\u3068\u3001\u30c7\u30b6\u30a4\u30ca\u30fc\u306a\u3057\u3067\u3082\u30d7\u30ed\u54c1\u8cea\u306e\u30b5\u30a4\u30c8\u304c\u4f5c\u308c\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u30b3\u30fc\u30c9\u3092\u30b3\u30d4\u30fc\u3057\u3066\u3059\u3050\u306b\u4f7f\u3048\u308b\u3088\u3046\u3001\u5b9f\u7528\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u3092\u591a\u6570\u63b2\u8f09\u3057\u3066\u3044\u307e\u3059\u3002\u300c\u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\u306b\u80cc\u666f\u753b\u50cf\u3068\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u91cd\u306d\u308b\u300d\u300c\u30b9\u30de\u30db\u3067\u753b\u50cf\u3092\u6700\u9069\u8868\u793a\u3059\u308b\u300d\u306a\u3069\u3001\u73fe\u5834\u3067\u5b9f\u969b\u306b\u3088\u304f\u4f7f\u3046\u30d1\u30bf\u30fc\u30f3\u3092\u4e2d\u5fc3\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background-image\u306e\u57fa\u672c\u69cb\u6587<\/strong>\u3068url()\u306e\u4f7f\u3044\u65b9\u304c\u5206\u304b\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background-repeat\/size\/position<\/strong>\u306e\u5404\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u5b8c\u5168\u7406\u89e3\u3067\u304d\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u8907\u6570\u80cc\u666f\u30fb\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3<\/strong>\u306e\u91cd\u306d\u5408\u308f\u305b\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>cover\/contain\u306e\u9055\u3044<\/strong>\u3068\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u306e\u5b9f\u8df5\u624b\u6cd5\u304c\u5206\u304b\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9<\/strong>\u3067\u30b3\u30fc\u30c9\u3092\u3059\u3063\u304d\u308a\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308b<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>Claude Code<\/strong>\u3067CSS\u80cc\u666f\u8a2d\u5b9a\u3092\u81ea\u52d5\u751f\u6210\u30fb\u4fee\u6b63\u3059\u308b\u65b9\u6cd5\u304c\u5206\u304b\u308b<\/span><\/div>\n\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-01\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">01<\/span>\n  <span class=\"section-label\" style=\"display:block;\">BG IMAGE BASICS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">background-image\u3068\u306f\u2015\u2015CSS\u3067\u80cc\u666f\u753b\u50cf\u3092\u8a2d\u5b9a\u3059\u308b\u57fa\u790e<\/span>\n  <span class=\"section-desc\">url()\u95a2\u6570\u306e\u4f7f\u3044\u65b9\u3068HTML\u30bf\u30b0\u306eimg\u3068\u306e\u9055\u3044\u3092\u7406\u89e3\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>background-image<\/code>\u306fCSS\u30d7\u30ed\u30d1\u30c6\u30a3\u306e\u3072\u3068\u3064\u3067\u3001HTML\u306e\u8981\u7d20\uff08div\u30fbsection\u30fbbody\u306a\u3069\uff09\u306e<strong>\u80cc\u666f\u306b\u753b\u50cf\u3092\u8a2d\u5b9a\u3059\u308b<\/strong>\u305f\u3081\u306b\u4f7f\u3044\u307e\u3059\u3002HTML\u306e<code>&lt;img&gt;<\/code>\u30bf\u30b0\u304c\u300c\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u3057\u3066\u306e\u753b\u50cf\u300d\u3092\u8868\u793a\u3059\u308b\u306e\u306b\u5bfe\u3057\u3001background-image\u306f\u300c\u88c5\u98fe\u30fb\u30c7\u30b6\u30a4\u30f3\u3068\u3057\u3066\u306e\u80cc\u666f\u753b\u50cf\u300d\u3092\u8868\u793a\u3059\u308b\u305f\u3081\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>background-image\u30d7\u30ed\u30d1\u30c6\u30a3<\/strong>\uff1aCSS\u3067\u8981\u7d20\u306e\u80cc\u666f\u306b\u753b\u50cf\u3084\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u8a2d\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3002\u300cbackground-image: url(\u753b\u50cf\u306e\u30d1\u30b9);\u300d\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002&lt;img&gt;\u30bf\u30b0\u3068\u9055\u3044\u3001\u30c6\u30ad\u30b9\u30c8\u306a\u3069\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u5f8c\u308d\u306b\u8868\u793a\u3055\u308c\u3001\u753b\u50cf\u306e\u4e0a\u306b\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u91cd\u306d\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002SEO\u7684\u306b\u306falt\u5c5e\u6027\u304c\u8a2d\u5b9a\u3067\u304d\u306a\u3044\u305f\u3081\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u3057\u3066\u610f\u5473\u306e\u3042\u308b\u753b\u50cf\u306b\u306fimg\u30bf\u30b0\u3092\u4f7f\u3044\u3001\u80cc\u666f\u306e\u307f\u306fbackground-image\u3067\u4f7f\u3044\u5206\u3051\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-1. \u57fa\u672c\u69cb\u6587\u3068url()\u95a2\u6570<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">background-image\u306e\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u306f\u4ee5\u4e0b\u306e\u3068\u304a\u308a\u3067\u3059\u3002<code>url()<\/code>\u95a2\u6570\u306e\u4e2d\u306b\u753b\u50cf\u306e\u30d1\u30b9\uff08URL\u307e\u305f\u306f\u76f8\u5bfe\u30d1\u30b9\uff09\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u57fa\u672c\u69cb\u6587 *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'..\/images\/hero.jpg'<\/span>);\n}\n\n<span style=\"color:#6c7086;\">\/* \u7d76\u5bfeURL\u3067\u6307\u5b9a *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'https:\/\/example.com\/images\/hero.jpg'<\/span>);\n}\n\n<span style=\"color:#6c7086;\">\/* \u753b\u50cf\u306a\u3057\uff08\u30ea\u30bb\u30c3\u30c8\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.no-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: none;\n}\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-2. &lt;img&gt;\u30bf\u30b0\u3068background-image\u306e\u4f7f\u3044\u5206\u3051<\/h3>\n\n\n\n<table>\n<thead><tr><th>\u6bd4\u8f03\u9805\u76ee<\/th><th>&lt;img&gt;\u30bf\u30b0<\/th><th>background-image\uff08CSS\uff09<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u7528\u9014<\/td><td>\u30b3\u30f3\u30c6\u30f3\u30c4\u3068\u3057\u3066\u610f\u5473\u306e\u3042\u308b\u753b\u50cf<\/td><td>\u88c5\u98fe\u30fb\u30c7\u30b6\u30a4\u30f3\u76ee\u7684\u306e\u80cc\u666f\u753b\u50cf<\/td><\/tr>\n<tr><td>SEO<\/td><td>alt\u30c6\u30ad\u30b9\u30c8\u3067SEO\u52b9\u679c\u3042\u308a<\/td><td>alt\u8a2d\u5b9a\u4e0d\u53ef\u3002SEO\u52b9\u679c\u306a\u3057<\/td><\/tr>\n<tr><td>\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3<\/td><td>\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u304c\u8aad\u3080<\/td><td>\u30b9\u30af\u30ea\u30fc\u30f3\u30ea\u30fc\u30c0\u30fc\u306f\u7121\u8996<\/td><\/tr>\n<tr><td>\u30c6\u30ad\u30b9\u30c8\u91cd\u306d\u5408\u308f\u305b<\/td><td>\u57fa\u672c\u7684\u306b\u96e3\u3057\u3044<\/td><td>\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u81ea\u7531\u306b\u91cd\u306d\u3089\u308c\u308b<\/td><\/tr>\n<tr><td>\u30b5\u30a4\u30ba\u5236\u5fa1<\/td><td>width\/height\u5c5e\u6027\u3067\u5236\u5fa1<\/td><td>background-size\u3067\u67d4\u8edf\u306b\u5236\u5fa1<\/td><\/tr>\n<tr><td>\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6<\/td><td>srcset\/sizes\u3067\u5bfe\u5fdc<\/td><td>media query\u3067\u30b5\u30a4\u30ba\u30fb\u4f4d\u7f6e\u3092\u5207\u308a\u66ff\u3048<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:18px;\">&#128161;<\/span><strong style=\"color:#16a34a;font-size:15px;\">\u3069\u3061\u3089\u3092\u4f7f\u3046\u3079\u304d\u304b\u5224\u65ad\u3059\u308b\u57fa\u6e96<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u300c\u3053\u306e\u753b\u50cf\u304c\u306a\u304f\u3066\u3082\u30da\u30fc\u30b8\u306e\u610f\u5473\u306f\u4f1d\u308f\u308b\u304b\uff1f\u300d\u3068\u3044\u3046\u554f\u3044\u3067\u5224\u65ad\u3057\u307e\u3059\u3002\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u30fb\u30d1\u30bf\u30fc\u30f3\u80cc\u666f\u30fb\u30c6\u30af\u30b9\u30c1\u30e3\u306fbackground-image\u3001\u5546\u54c1\u5199\u771f\u30fb\u30d6\u30ed\u30b0\u306e\u30a2\u30a4\u30ad\u30e3\u30c3\u30c1\u30fb\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u5199\u771f\u306fimg\u30bf\u30b0\u304c\u9069\u5207\u3067\u3059\u3002SEO\u5bfe\u7b56\u3067\u30da\u30fc\u30b8\u306e\u4e3b\u8981\u753b\u50cf\u306balt\u5c5e\u6027\u3092\u4ed8\u3051\u305f\u3044\u5834\u5408\u306f\u5fc5\u305aimg\u30bf\u30b0\u3092\u4f7f\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">1-3. background-color\u3068\u7d44\u307f\u5408\u308f\u305b\u308b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">background-image\u306f<code>background-color<\/code>\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3048\u307e\u3059\u3002\u753b\u50cf\u304c\u8aad\u307f\u8fbc\u307e\u308c\u308b\u524d\u3084\u3001\u753b\u50cf\u304c\u306a\u3044\u90e8\u5206\u306f\u80cc\u666f\u8272\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002PNG\u3084WebP\u306a\u3069\u900f\u660e\u90e8\u5206\u306e\u3042\u308b\u753b\u50cf\u3067\u306f\u3001\u900f\u660e\u90e8\u5206\u306b\u80cc\u666f\u8272\u304c\u900f\u3051\u3066\u898b\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u753b\u50cf\uff0b\u80cc\u666f\u8272\u306e\u7d44\u307f\u5408\u308f\u305b *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-color<\/span>: <span style=\"color:#fab387;\">#1a1a2e<\/span>;\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'hero.webp'<\/span>);\n  <span style=\"color:#6c7086;\">\/* \u753b\u50cf\u8aad\u307f\u8fbc\u307f\u4e2d\u306f#1a1a2e\u306e\u80cc\u666f\u8272\u304c\u8868\u793a\u3055\u308c\u308b *\/<\/span>\n}\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\u306b\u80cc\u666f\u753b\u50cf\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u304d\u3001background-color\u3082\u5fc5\u305a\u8a2d\u5b9a\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002\u4f4e\u901f\u306a\u56de\u7dda\u3067\u306f\u753b\u50cf\u306e\u8aad\u307f\u8fbc\u307f\u306b\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u304c\u3001\u80cc\u666f\u8272\u304c\u3042\u308c\u3070\u753b\u50cf\u304c\u6765\u308b\u307e\u3067\u306e\u9593\u3082\u767d\u3044\u7a7a\u767d\u306b\u306a\u3089\u305a\u3001\u30e6\u30fc\u30b6\u30fc\u4f53\u9a13\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-02\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">02<\/span>\n  <span class=\"section-label\" style=\"display:block;\">BACKGROUND REPEAT<\/span>\n  <span class=\"section-title\" style=\"display:block;\">background-repeat\u3067\u7e70\u308a\u8fd4\u3057\u3092\u5236\u5fa1\u3059\u308b<\/span>\n  <span class=\"section-desc\">\u30bf\u30a4\u30eb\u72b6\u8868\u793a\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3059\u308b4\u3064\u306e\u5024\u3092\u4f7f\u3044\u5206\u3051\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">background-image\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u8a2d\u5b9a\u3067\u306f\u3001\u753b\u50cf\u304c\u8981\u7d20\u306e\u5e45\u30fb\u9ad8\u3055\u3044\u3063\u3071\u3044\u306b<strong>\u30bf\u30a4\u30eb\u72b6\u306b\u7e70\u308a\u8fd4\u3057\u8868\u793a<\/strong>\u3055\u308c\u307e\u3059\u3002<code>background-repeat<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u3053\u306e\u7e70\u308a\u8fd4\u3057\u8a2d\u5b9a\u3092\u5909\u66f4\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u5024<\/th><th>\u52d5\u4f5c<\/th><th>\u4f7f\u3044\u3069\u3053\u308d<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>repeat\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\uff09<\/td><td>X\u30fbY\u4e21\u65b9\u5411\u306b\u7e70\u308a\u8fd4\u3059<\/td><td>\u30d1\u30bf\u30fc\u30f3\u30fb\u30c6\u30af\u30b9\u30c1\u30e3\u80cc\u666f<\/td><\/tr>\n<tr><td>repeat-x<\/td><td>X\u65b9\u5411\uff08\u6a2a\uff09\u306e\u307f\u7e70\u308a\u8fd4\u3059<\/td><td>\u6a2a\u65b9\u5411\u306e\u30b9\u30c8\u30e9\u30a4\u30d7\u30d1\u30bf\u30fc\u30f3<\/td><\/tr>\n<tr><td>repeat-y<\/td><td>Y\u65b9\u5411\uff08\u7e26\uff09\u306e\u307f\u7e70\u308a\u8fd4\u3059<\/td><td>\u7e26\u65b9\u5411\u306e\u30b9\u30c8\u30e9\u30a4\u30d7\u30d1\u30bf\u30fc\u30f3<\/td><\/tr>\n<tr><td>no-repeat<\/td><td>\u7e70\u308a\u8fd4\u3055\u306a\u3044\uff081\u679a\u3060\u3051\u8868\u793a\uff09<\/td><td>\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u30fb\u30ed\u30b4\u30fb\u30a2\u30a4\u30b3\u30f3\u914d\u7f6e<\/td><\/tr>\n<tr><td>space<\/td><td>\u5747\u7b49\u306b\u914d\u7f6e\uff08\u7aef\u306e\u4f59\u767d\u3067\u8abf\u6574\uff09<\/td><td>\u30a2\u30a4\u30b3\u30f3\u30d1\u30bf\u30fc\u30f3\u3092\u304d\u308c\u3044\u306b\u914d\u7f6e<\/td><\/tr>\n<tr><td>round<\/td><td>\u5747\u7b49\u306b\u914d\u7f6e\uff08\u753b\u50cf\u3092\u30ea\u30b5\u30a4\u30ba\uff09<\/td><td>\u30bf\u30a4\u30eb\u3092\u753b\u9762\u5e45\u306b\u5408\u308f\u305b\u305f\u3044\u3068\u304d<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\uff1a\u7e70\u308a\u8fd4\u3057\u306a\u3057\u304c\u57fa\u672c *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'hero.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-repeat<\/span>: <span style=\"color:#fab387;\">no-repeat<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/* \u6c34\u7389\u30d1\u30bf\u30fc\u30f3\uff1a\u4e21\u65b9\u5411\u306b\u7e70\u308a\u8fd4\u3059 *\/<\/span>\n<span style=\"color:#89b4fa;\">.pattern-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'dots.png'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-repeat<\/span>: <span style=\"color:#fab387;\">repeat<\/span>;\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">20px 20px<\/span>;\n}\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:18px;\">&#128161;<\/span><strong style=\"color:#16a34a;font-size:15px;\">no-repeat\u3092\u6700\u3082\u983b\u7e41\u306b\u4f7f\u3046<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">\u5b9f\u969b\u306eWeb\u30c7\u30b6\u30a4\u30f3\u3067\u306f\u3001background-repeat: no-repeat\u3092\u4f7f\u3046\u30b1\u30fc\u30b9\u304c\u6700\u3082\u591a\u3044\u3067\u3059\u3002\u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\u30fb\u30bb\u30af\u30b7\u30e7\u30f3\u80cc\u666f\u30fbCTA\u30d0\u30ca\u30fc\u306a\u3069\u3001\u5927\u304d\u306a\u753b\u50cf\u30921\u679a\u4f7f\u3046\u5834\u5408\u306fno-repeat\u304c\u57fa\u672c\u8a2d\u5b9a\u306b\u306a\u308a\u307e\u3059\u3002\u53cd\u5bfe\u306b\u3001\u5c0f\u3055\u306a\u30d1\u30bf\u30fc\u30f3\u753b\u50cf\u3092\u7e70\u308a\u8fd4\u3057\u3066\u30c6\u30af\u30b9\u30c1\u30e3\u611f\u3092\u51fa\u3057\u305f\u3044\u5834\u5408\u306frepeat\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-03\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">03<\/span>\n  <span class=\"section-label\" style=\"display:block;\">BACKGROUND SIZE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">background-size\u3067\u753b\u50cf\u30b5\u30a4\u30ba\u3092\u81ea\u5728\u306b\u8abf\u6574\u3059\u308b<\/span>\n  <span class=\"section-desc\">cover\u30fbcontain\u306e\u9055\u3044\u3068\u6570\u5024\u6307\u5b9a\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>background-size<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u3001\u80cc\u666f\u753b\u50cf\u306e\u30b5\u30a4\u30ba\u3092\u5236\u5fa1\u3057\u307e\u3059\u3002\u6700\u3082\u91cd\u8981\u306a\u5024\u306f<strong>cover<\/strong>\u3068<strong>contain<\/strong>\u3067\u3001\u3053\u306e2\u3064\u3092\u6b63\u3057\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u306e\u57fa\u672c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>background-size: cover<\/strong>\uff1a\u80cc\u666f\u753b\u50cf\u3092\u8981\u7d20\u5168\u4f53\u3092\u8986\u3046\u3088\u3046\u306b\u62e1\u5927\u30fb\u7e2e\u5c0f\u3057\u307e\u3059\u3002\u753b\u50cf\u306e\u30a2\u30b9\u30da\u30af\u30c8\u6bd4\uff08\u7e26\u6a2a\u6bd4\uff09\u306f\u4fdd\u6301\u3055\u308c\u307e\u3059\u304c\u3001\u8981\u7d20\u306e\u30b5\u30a4\u30ba\u306b\u5408\u308f\u305b\u3066\u753b\u50cf\u306e\u4e00\u90e8\u304c\u306f\u307f\u51fa\u3057\u3066\u30af\u30ea\u30c3\u30d7\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u3084\u30d5\u30eb\u30b9\u30af\u30ea\u30fc\u30f3\u80cc\u666f\u3067\u306f\u6700\u3082\u591a\u304f\u4f7f\u308f\u308c\u308b\u8a2d\u5b9a\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>background-size: contain<\/strong>\uff1a\u80cc\u666f\u753b\u50cf\u3092\u8981\u7d20\u306e\u4e2d\u306b\u53ce\u307e\u308b\u3088\u3046\u62e1\u5927\u30fb\u7e2e\u5c0f\u3057\u307e\u3059\u3002\u753b\u50cf\u5168\u4f53\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u304c\u3001\u8981\u7d20\u3068\u306e\u6bd4\u7387\u304c\u9055\u3046\u5834\u5408\u306f\u4f59\u767d\uff08\u9699\u9593\uff09\u304c\u751f\u307e\u308c\u307e\u3059\u3002\u30ed\u30b4\u3084\u91cd\u8981\u306a\u5168\u4f53\u50cf\u3092\u898b\u305b\u305f\u3044\u5834\u5408\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u5024<\/th><th>\u52d5\u4f5c<\/th><th>\u753b\u50cf\u306e\u5207\u308c<\/th><th>\u4f59\u767d<\/th><th>\u4f7f\u3044\u3069\u3053\u308d<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>cover<\/td><td>\u8981\u7d20\u3092\u753b\u50cf\u3067\u5b8c\u5168\u306b\u8986\u3046<\/td><td>\u3042\u308a\uff08\u306f\u307f\u51fa\u3057\u30af\u30ea\u30c3\u30d7\uff09<\/td><td>\u306a\u3057<\/td><td>\u30d2\u30fc\u30ed\u30fc\u30fb\u30bb\u30af\u30b7\u30e7\u30f3\u80cc\u666f<\/td><\/tr>\n<tr><td>contain<\/td><td>\u753b\u50cf\u5168\u4f53\u3092\u8981\u7d20\u5185\u306b\u53ce\u3081\u308b<\/td><td>\u306a\u3057<\/td><td>\u3042\u308a\uff08background-color\u3067\u57cb\u3081\u308b\uff09<\/td><td>\u30ed\u30b4\u30fb\u30a2\u30a4\u30b3\u30f3\u30fb\u5168\u4f53\u8868\u793a<\/td><\/tr>\n<tr><td>100% auto<\/td><td>\u5e45\u3092100%\u306b\u5408\u308f\u305b\u9ad8\u3055\u81ea\u52d5<\/td><td>\u7e26\u306b\u306f\u306f\u307f\u51fa\u3059\u53ef\u80fd\u6027<\/td><td>\u306a\u3057<\/td><td>\u6a2a\u5e45\u306b\u5408\u308f\u305b\u305f\u3044\u3068\u304d<\/td><\/tr>\n<tr><td>auto 100%<\/td><td>\u9ad8\u3055\u3092100%\u306b\u5408\u308f\u305b\u5e45\u81ea\u52d5<\/td><td>\u6a2a\u306b\u306f\u306f\u307f\u51fa\u3059\u53ef\u80fd\u6027<\/td><td>\u306a\u3057<\/td><td>\u7e26\u9577\u8981\u7d20\u306e\u7e26\u3044\u3063\u3071\u3044<\/td><\/tr>\n<tr><td>200px 150px<\/td><td>px\u6307\u5b9a\u3067\u56fa\u5b9a\u30b5\u30a4\u30ba<\/td><td>\u30b5\u30a4\u30ba\u6b21\u7b2c<\/td><td>\u30b5\u30a4\u30ba\u6b21\u7b2c<\/td><td>\u30a2\u30a4\u30b3\u30f3\u30fb\u56fa\u5b9a\u30b5\u30a4\u30ba\u30d1\u30bf\u30fc\u30f3<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\uff08\u6700\u3082\u3088\u304f\u4f7f\u3046\u30d1\u30bf\u30fc\u30f3\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'hero.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-repeat<\/span>: <span style=\"color:#fab387;\">no-repeat<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center center<\/span>;\n  <span style=\"color:#a6e3a1;\">height<\/span>: <span style=\"color:#fab387;\">100vh<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/* \u30ed\u30b4\u80cc\u666f\uff08contain\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.logo-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'logo.svg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">contain<\/span>;\n  <span style=\"color:#a6e3a1;\">background-repeat<\/span>: <span style=\"color:#fab387;\">no-repeat<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center<\/span>;\n  <span style=\"color:#a6e3a1;\">width<\/span>: <span style=\"color:#fab387;\">200px<\/span>;\n  <span style=\"color:#a6e3a1;\">height<\/span>: <span style=\"color:#fab387;\">100px<\/span>;\n}\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:20px;\">&#9888;&#65039;<\/span><strong style=\"color:#dc2626;font-size:16px;\">cover\u3092\u4f7f\u3046\u3068\u304d\u9ad8\u3055\u306e\u8a2d\u5b9a\u304c\u5fc5\u8981<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">background-size: cover\u3092\u8a2d\u5b9a\u3057\u3066\u3082\u3001\u8981\u7d20\uff08div\u7b49\uff09\u306bheight\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u80cc\u666f\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u8981\u7d20\u306b\u660e\u793a\u7684\u306aheight\uff08100vh\u3001300px\u7b49\uff09\u3092\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u30b3\u30f3\u30c6\u30f3\u30c4\u3067\u9ad8\u3055\u304c\u6c7a\u307e\u308b\u72b6\u614b\u306b\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">cover\u3068contain\u306e\u9055\u3044\u306f\u300c\u30c8\u30ea\u30df\u30f3\u30b0\u3092\u8a31\u5bb9\u3059\u308b\u304b\u300d\u306e\u5dee\u3067\u3059\u3002\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u306e\u3088\u3046\u306b\u300c\u753b\u50cf\u5168\u4f53\u3092\u898b\u305b\u306a\u304f\u3066\u3044\u3044\u304c\u8981\u7d20\u5168\u4f53\u3092\u8986\u3044\u305f\u3044\u300d\u5834\u5408\u306fcover\u3001\u30a2\u30a4\u30b3\u30f3\u30fb\u30ed\u30b4\u306e\u3088\u3046\u306b\u300c\u5168\u4f53\u3092\u898b\u305b\u305f\u3044\u300d\u5834\u5408\u306fcontain\u3002\u3053\u306e\u4f7f\u3044\u5206\u3051\u3055\u3048\u899a\u3048\u308c\u3070\u80cc\u666f\u753b\u50cf\u306e90%\u306f\u5bfe\u5fdc\u3067\u304d\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-04\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">04<\/span>\n  <span class=\"section-label\" style=\"display:block;\">BACKGROUND POSITION<\/span>\n  <span class=\"section-title\" style=\"display:block;\">background-position\u3067\u4f4d\u7f6e\u3092\u5b8c\u5168\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb<\/span>\n  <span class=\"section-desc\">\u30ad\u30fc\u30ef\u30fc\u30c9\u30fb\u6570\u5024\u30fb\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8\u3067\u753b\u50cf\u306e\u8868\u793a\u4f4d\u7f6e\u3092\u6307\u5b9a\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><code>background-position<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u3001\u80cc\u666f\u753b\u50cf\u306e\u8868\u793a\u4f4d\u7f6e\uff08\u30a2\u30f3\u30ab\u30fc\u30dd\u30a4\u30f3\u30c8\uff09\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u300c\u753b\u50cf\u306e\u4e2d\u5fc3\u3092\u5e38\u306b\u8868\u793a\u3057\u305f\u3044\u300d\u300c\u4e0a\u90e8\u306e\u91cd\u8981\u306a\u90e8\u5206\u304c\u5207\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u5834\u9762\u3067\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<table>\n<thead><tr><th>\u6307\u5b9a\u65b9\u6cd5<\/th><th>\u4f8b<\/th><th>\u52d5\u4f5c<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>\u30ad\u30fc\u30ef\u30fc\u30c9<\/td><td>center center<\/td><td>\u6c34\u5e73\u30fb\u5782\u76f4\u4e2d\u592e\uff08\u6700\u3082\u3088\u304f\u4f7f\u3046\uff09<\/td><\/tr>\n<tr><td>\u30ad\u30fc\u30ef\u30fc\u30c9\u7d44\u307f\u5408\u308f\u305b<\/td><td>left top<\/td><td>\u5de6\u4e0a\u63c3\u3048<\/td><\/tr>\n<tr><td>\u30d1\u30fc\u30bb\u30f3\u30c6\u30fc\u30b8<\/td><td>50% 30%<\/td><td>\u6c34\u5e7350%\u30fb\u5782\u76f430%\u306e\u4f4d\u7f6e<\/td><\/tr>\n<tr><td>px\u6307\u5b9a<\/td><td>20px 50px<\/td><td>\u5de6\u304b\u308920px\u30fb\u4e0a\u304b\u308950px<\/td><\/tr>\n<tr><td>\u5358\u4e00\u30ad\u30fc\u30ef\u30fc\u30c9<\/td><td>center<\/td><td>\u6c34\u5e73\u4e2d\u592e\uff08\u5782\u76f4\u306fcenter\u3068\u3057\u3066\u6271\u308f\u308c\u308b\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u4eba\u7269\u5199\u771f\u3067\u9854\u304c\u5207\u308c\u306a\u3044\u3088\u3046\u4e0a\u90e8\u3092\u8868\u793a *\/<\/span>\n<span style=\"color:#89b4fa;\">.portrait-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'person.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center top<\/span>;\n  <span style=\"color:#6c7086;\">\/* \u753b\u50cf\u306e\u4e0a\u90e8\uff08\u9854\u306e\u90e8\u5206\uff09\u304c\u512a\u5148\u7684\u306b\u8868\u793a\u3055\u308c\u308b *\/<\/span>\n}\n\n<span style=\"color:#6c7086;\">\/* \u98a8\u666f\u5199\u771f\uff1a\u4e2d\u592e\u3092\u57fa\u6e96\u306b\u8868\u793a *\/<\/span>\n<span style=\"color:#89b4fa;\">.landscape-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'landscape.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center center<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/* \u53f3\u5bc4\u305b\uff08\u5546\u54c1\u753b\u50cf\u304c\u53f3\u306b\u3042\u308b\u5834\u5408\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.product-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'product.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">right center<\/span>;\n}\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:18px;\">&#128161;<\/span><strong style=\"color:#16a34a;font-size:15px;\">background-attachment\u3067\u30d1\u30e9\u30e9\u30c3\u30af\u30b9\u52b9\u679c<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">background-attachment: fixed \u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u30b9\u30af\u30ed\u30fc\u30eb\u3057\u3066\u3082\u80cc\u666f\u753b\u50cf\u304c\u56fa\u5b9a\u3055\u308c\u305f\u307e\u307e\u306e\u300c\u30d1\u30e9\u30e9\u30c3\u30af\u30b9\u52b9\u679c\u300d\u304c\u4f5c\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u30e2\u30d0\u30a4\u30eb\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u30b5\u30dd\u30fc\u30c8\u304c\u4e0d\u5b89\u5b9a\u306a\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u5411\u3051\u306e\u6f14\u51fa\u3068\u3057\u3066\u4f7f\u3046\u306e\u304c\u5b89\u5168\u3067\u3059\u3002<\/p>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-05\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">05<\/span>\n  <span class=\"section-label\" style=\"display:block;\">MULTIPLE & GRADIENT<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u8907\u6570\u80cc\u666f\u3068\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u91cd\u306d\u5408\u308f\u305b<\/span>\n  <span class=\"section-desc\">\u30e2\u30c0\u30f3\u306aWeb\u30c7\u30b6\u30a4\u30f3\u306b\u6b20\u304b\u305b\u306a\u3044\u9ad8\u5ea6\u306a\u80cc\u666f\u30c6\u30af\u30cb\u30c3\u30af<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CSS\u306ebackground-image\u306f<strong>\u8907\u6570\u306e\u753b\u50cf\u3084\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u91cd\u306d\u5408\u308f\u305b\u308b<\/strong>\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b3\u30f3\u30de\uff08<code>,<\/code>\uff09\u3067\u533a\u5207\u3063\u3066\u8907\u6570\u306e\u5024\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u6700\u521d\u306b\u66f8\u3044\u305f\u3082\u306e\u304c\u6700\u524d\u9762\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5-1. \u753b\u50cf\u3068\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u91cd\u306d\u308b\u30d1\u30bf\u30fc\u30f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u30d1\u30bf\u30fc\u30f3\u304c\u300c\u6697\u8272\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\uff0b\u80cc\u666f\u753b\u50cf\u306e\u91cd\u306d\u5408\u308f\u305b\u300d\u3067\u3059\u3002\u767d\u3044\u30c6\u30ad\u30b9\u30c8\u3092\u80cc\u666f\u753b\u50cf\u306e\u4e0a\u306b\u8f09\u305b\u308b\u3068\u304d\u3001\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3067\u753b\u50cf\u3092\u5c11\u3057\u6697\u304f\u3059\u308b\u3053\u3068\u3067\u30c6\u30ad\u30b9\u30c8\u306e\u8996\u8a8d\u6027\u304c\u4e0a\u304c\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\uff0b\u753b\u50cf\u306e\u91cd\u306d\u5408\u308f\u305b\uff08\u30d2\u30fc\u30ed\u30fc\u5b9a\u756a\u30d1\u30bf\u30fc\u30f3\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>:\n    linear-gradient(\n      to bottom,\n      rgba(<span style=\"color:#fab387;\">0, 0, 0, 0.5<\/span>) 0%,\n      rgba(<span style=\"color:#fab387;\">0, 0, 0, 0.2<\/span>) 100%\n    ),\n    url(<span style=\"color:#fab387;\">'hero.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center<\/span>;\n  <span style=\"color:#a6e3a1;\">color<\/span>: <span style=\"color:#fab387;\">#fff<\/span>;\n  <span style=\"color:#a6e3a1;\">height<\/span>: <span style=\"color:#fab387;\">100vh<\/span>;\n}\n<\/div>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>linear-gradient()<\/strong>\uff1aCSS\u3067\u7dda\u5f62\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\uff08\u76f4\u7dda\u7684\u306a\u8272\u306e\u5909\u5316\uff09\u3092\u4f5c\u6210\u3059\u308b\u95a2\u6570\u3002\u300clinear-gradient(\u65b9\u5411, \u958b\u59cb\u8272, \u7d42\u4e86\u8272)\u300d\u306e\u5f62\u5f0f\u3067\u8a18\u8ff0\u3057\u307e\u3059\u3002\u300cto bottom\u300d\u3067\u4e0a\u304b\u3089\u4e0b\u3078\u3001\u300c45deg\u300d\u306745\u5ea6\u306e\u65b9\u5411\u3078\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u304c\u9032\u307f\u307e\u3059\u3002background-image\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u753b\u50cf\u3068\u540c\u69d8\u306b\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">5-2. \u8907\u6570\u306e\u753b\u50cf\u3092\u91cd\u306d\u308b<\/h3>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u8907\u6570\u753b\u50cf\u306e\u91cd\u306d\u5408\u308f\u305b\uff08\u524d\u9762\u306e\u3082\u306e\u3092\u5148\u306b\u66f8\u304f\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.multi-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>:\n    url(<span style=\"color:#fab387;\">'icon-overlay.png'<\/span>),   <span style=\"color:#6c7086;\">\/* \u524d\u9762\uff08\u4e0a\uff09 *\/<\/span>\n    url(<span style=\"color:#fab387;\">'pattern.png'<\/span>),         <span style=\"color:#6c7086;\">\/* \u4e2d\u9593 *\/<\/span>\n    url(<span style=\"color:#fab387;\">'hero-base.jpg'<\/span>);      <span style=\"color:#6c7086;\">\/* \u80cc\u9762\uff08\u4e0b\uff09 *\/<\/span>\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">auto, 20px 20px, cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-repeat<\/span>: <span style=\"color:#fab387;\">no-repeat, repeat, no-repeat<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">right bottom, left top, center<\/span>;\n}\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u6570\u80cc\u666f\u3092\u6307\u5b9a\u3059\u308b\u3068\u304d\u3001<code>background-size<\/code>\u30fb<code>background-repeat<\/code>\u30fb<code>background-position<\/code>\u3082\u540c\u69d8\u306b\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u8907\u6570\u306e\u5024\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u5024\u306e\u6570\u304c\u753b\u50cf\u6570\u3068\u4e00\u81f4\u3059\u308b\u3088\u3046\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">5-3. CSS\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u307f\u3067\u80cc\u666f\u3092\u4f5c\u308b<\/h3>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u7dda\u5f62\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3 *\/<\/span>\n<span style=\"color:#89b4fa;\">.gradient-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: linear-gradient(<span style=\"color:#fab387;\">135deg, #667eea 0%, #764ba2 100%<\/span>);\n}\n\n<span style=\"color:#6c7086;\">\/* \u653e\u5c04\u72b6\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3 *\/<\/span>\n<span style=\"color:#89b4fa;\">.radial-bg<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: radial-gradient(<span style=\"color:#fab387;\">circle at center, #667eea 0%, #764ba2 100%<\/span>);\n}\n\n<span style=\"color:#6c7086;\">\/* \u30d6\u30e9\u30f3\u30c9\u30ab\u30e9\u30fc\u306e\u659c\u3081\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3 *\/<\/span>\n<span style=\"color:#89b4fa;\">.brand-gradient<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: linear-gradient(<n    <span style=\"color:#fab387;\">to right,<\/span>\n    <span style=\"color:#fab387;\">#dc2626 0%,<\/span>\n    <span style=\"color:#fab387;\">#991b1b 100%<\/span>\n  );\n}\n<\/div>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\uff0b\u753b\u50cf\u306e\u91cd\u306d\u5408\u308f\u305b\u306f\u3001Web\u30c7\u30b6\u30a4\u30f3\u306e\u4e2d\u3067\u6700\u3082\u30a4\u30f3\u30d1\u30af\u30c8\u304c\u5927\u304d\u3044\u624b\u6cd5\u306e\u3072\u3068\u3064\u3067\u3059\u3002\u753b\u50cf1\u679a\u306b\u8584\u3044\u30aa\u30fc\u30d0\u30fc\u30ec\u30a4\u3092\u91cd\u306d\u308b\u3060\u3051\u3067\u3001\u6587\u5b57\u306e\u8996\u8a8d\u6027\u3068\u30c7\u30b6\u30a4\u30f3\u306e\u5b8c\u6210\u5ea6\u304c\u4e00\u6c17\u306b\u4e0a\u304c\u308a\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-06\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">06<\/span>\n  <span class=\"section-label\" style=\"display:block;\">PERFORMANCE & RESPONSIVE<\/span>\n  <span class=\"section-title\" style=\"display:block;\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30fb\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u306e\u5b9f\u8df5<\/span>\n  <span class=\"section-desc\">\u30b9\u30de\u30db\u5bfe\u5fdc\u3068\u753b\u50cf\u6700\u9069\u5316\u3067\u8868\u793a\u901f\u5ea6\u3068UX\u3092\u5411\u4e0a\u3055\u305b\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Web\u30b5\u30a4\u30c8\u306e\u80cc\u666f\u753b\u50cf\u306f\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u3068\u30da\u30fc\u30b8\u8aad\u307f\u8fbc\u307f\u304c\u9045\u304f\u306a\u308a\u3001SEO\u30fbUX\u306b\u60aa\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u307e\u305f\u3001PC\u3068\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u9069\u5207\u306a\u80cc\u666f\u8a2d\u5b9a\u304c\u7570\u306a\u308b\u3053\u3068\u3082\u8003\u616e\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">6-1. \u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea\u3067\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc<\/h3>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u30c7\u30b9\u30af\u30c8\u30c3\u30d7\uff1a\u9ad8\u89e3\u50cf\u5ea6\u306e\u753b\u50cf *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'hero-desktop.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center<\/span>;\n  <span style=\"color:#a6e3a1;\">height<\/span>: <span style=\"color:#fab387;\">80vh<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/* \u30e2\u30d0\u30a4\u30eb\uff1a\u5c0f\u30b5\u30a4\u30ba\u753b\u50cf\u306b\u5207\u308a\u66ff\u3048 *\/<\/span>\n<span style=\"color:#89b4fa;\">@media<\/span> (max-width: <span style=\"color:#fab387;\">768px<\/span>) {\n  <span style=\"color:#89b4fa;\">.hero<\/span> {\n    <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'hero-mobile.jpg'<\/span>);\n    <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center top<\/span>;\n    <span style=\"color:#a6e3a1;\">height<\/span>: <span style=\"color:#fab387;\">60vh<\/span>;\n  }\n}\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u6700\u9069\u5316\u624b\u6cd5<\/th><th>\u52b9\u679c<\/th><th>\u5b9f\u88c5\u65b9\u6cd5<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>WebP\u5f62\u5f0f\u306e\u4f7f\u7528<\/td><td>JPEG\u6bd430\u301c40%\u306e\u5bb9\u91cf\u524a\u6e1b<\/td><td>url('hero.webp')\u3067\u6307\u5b9a\u3001fallback\u306fJPEG<\/td><\/tr>\n<tr><td>\u9069\u5207\u306a\u89e3\u50cf\u5ea6<\/td><td>\u4e0d\u8981\u306a\u30c7\u30fc\u30bf\u3092\u6e1b\u3089\u3059<\/td><td>PC\u306f1920px\u3001\u30e2\u30d0\u30a4\u30eb\u306f768px\u4ee5\u4e0b\u306e\u753b\u50cf\u3092\u7528\u610f<\/td><\/tr>\n<tr><td>lazy loading<\/td><td>\u30b9\u30af\u30ed\u30fc\u30eb\u6642\u306b\u8aad\u307f\u8fbc\u3080<\/td><td>JavaScript\u3067\u5236\u5fa1\u3001\u521d\u671f\u30ed\u30fc\u30c9\u3092\u8efd\u6e1b<\/td><\/tr>\n<tr><td>CSS will-change<\/td><td>GPU\u63cf\u753b\u3092\u6700\u9069\u5316<\/td><td>will-change: transform\uff08\u30d1\u30e9\u30e9\u30c3\u30af\u30b9\u6642\uff09<\/td><\/tr>\n<tr><td>\u753b\u50cf\u5727\u7e2e<\/td><td>\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u3092\u524a\u6e1b<\/td><td>TinyPNG\u30fbSquoosh\u7b49\u306e\u30c4\u30fc\u30eb\u3067\u4e8b\u524d\u5727\u7e2e<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div style=\"background:#f8f9fa;border-left:4px solid #6b7280;border-radius:0 8px 8px 0;padding:16px 20px;margin:20px 0;\">\n  <p style=\"margin:0 0 4px;font-size:13px;font-weight:700;color:#6b7280;letter-spacing:1px;\">&#128218; \u7528\u8a9e\u89e3\u8aac<\/p>\n  <p style=\"margin:0;font-size:15px;line-height:1.7;\"><strong>WebP\uff08\u30a6\u30a7\u30d6\u30d4\u30fc\uff09<\/strong>\uff1aGoogle\u304c\u958b\u767a\u3057\u305fWeb\u30b5\u30a4\u30c8\u5411\u3051\u306e\u753b\u50cf\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3002JPEG\u3084PNG\u3068\u6bd4\u3079\u3066\u540c\u3058\u753b\u8cea\u3067\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u304c30\u301c40%\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u3002\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\uff08Chrome\u30fbFirefox\u30fbSafari\u30fbEdge\uff09\u3067\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002background-image\u3067WebP\u3092\u4f7f\u3046\u5834\u5408\u3001\u53e4\u3044\u30d6\u30e9\u30a6\u30b6\u5411\u3051\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u691c\u8a0e\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<div style=\"background:#f0fdf4;border:1px solid #22c55e;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:18px;\">&#128161;<\/span><strong style=\"color:#16a34a;font-size:15px;\">background-attachment\u3068\u30e2\u30d0\u30a4\u30eb\u306e\u6ce8\u610f\u70b9<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">background-attachment: fixed\u306fiOS Safari\u3068Android\u306e\u4e00\u90e8\u30d6\u30e9\u30a6\u30b6\u3067\u6b63\u3057\u304f\u52d5\u4f5c\u3057\u306a\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u3067\u30d1\u30e9\u30e9\u30c3\u30af\u30b9\u52b9\u679c\u3092\u51fa\u3057\u305f\u3044\u5834\u5408\u306f\u3001JavaScript\u3067\u30b9\u30af\u30ed\u30fc\u30eb\u91cf\u3092\u53d6\u5f97\u3057\u3066translate3d\u3067\u79fb\u52d5\u3055\u305b\u308b\u4ee3\u66ff\u5b9f\u88c5\u304c\u5b89\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-07\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">07<\/span>\n  <span class=\"section-label\" style=\"display:block;\">BACKGROUND SHORTHAND<\/span>\n  <span class=\"section-title\" style=\"display:block;\">background\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3067\u30b3\u30fc\u30c9\u3092\u30b9\u30c3\u30ad\u30ea\u3055\u305b\u308b<\/span>\n  <span class=\"section-desc\">6\u3064\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u30921\u884c\u306b\u307e\u3068\u3081\u308b\u66f8\u304d\u65b9\u3068\u66f8\u304d\u9806\u306e\u30eb\u30fc\u30eb<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">background-image\u30fbbackground-color\u30fbbackground-repeat\u30fbbackground-position\u30fbbackground-size\u30fbbackground-attachment\u306f\u3001<code>background<\/code>\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u307e\u3068\u3081\u3066\u4e00\u884c\u3067\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\uff09\u3002<\/p>\n\n\n\n<div style=\"background:#1e1e2e;border-radius:10px;padding:20px 24px;margin:20px 0;font-family:monospace;font-size:14px;line-height:1.8;color:#cdd6f4;overflow-x:auto;white-space:pre;\">\n<span style=\"color:#6c7086;\">\/* \u500b\u5225\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u66f8\u304f\u5834\u5408 *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background-image<\/span>: url(<span style=\"color:#fab387;\">'hero.jpg'<\/span>);\n  <span style=\"color:#a6e3a1;\">background-color<\/span>: <span style=\"color:#fab387;\">#1a1a2e<\/span>;\n  <span style=\"color:#a6e3a1;\">background-repeat<\/span>: <span style=\"color:#fab387;\">no-repeat<\/span>;\n  <span style=\"color:#a6e3a1;\">background-position<\/span>: <span style=\"color:#fab387;\">center center<\/span>;\n  <span style=\"color:#a6e3a1;\">background-size<\/span>: <span style=\"color:#fab387;\">cover<\/span>;\n}\n\n<span style=\"color:#6c7086;\">\/* \u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3067\u540c\u3058\u5185\u5bb9\u30921\u884c\u306b\uff08\/\u3067size\u3092\u533a\u5207\u308b\uff09 *\/<\/span>\n<span style=\"color:#89b4fa;\">.hero<\/span> {\n  <span style=\"color:#a6e3a1;\">background<\/span>: url(<span style=\"color:#fab387;\">'hero.jpg'<\/span>) <span style=\"color:#fab387;\">center center \/ cover no-repeat #1a1a2e<\/span>;\n}\n<\/div>\n\n\n\n<div style=\"background:#fef2f2;border:2px solid #dc2626;border-radius:8px;padding:20px 24px;margin:24px 0;\">\n  <div style=\"display:flex;align-items:center;gap:8px;margin-bottom:12px;\"><span style=\"font-size:20px;\">&#9888;&#65039;<\/span><strong style=\"color:#dc2626;font-size:16px;\">background\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u306e\u6ce8\u610f\u70b9<\/strong><\/div>\n  <p style=\"margin:0;font-size:15px;line-height:1.8;color:#333;\">background\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3092\u4f7f\u3046\u3068\u3001\u6307\u5b9a\u3057\u306a\u304b\u3063\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306b\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070background-color\u3060\u3051\u4e0a\u66f8\u304d\u3057\u305f\u304f\u3066background: #333;\u3068\u66f8\u304f\u3068\u3001background-image\u306a\u3069\u3082\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u306f\u5168\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u307e\u3068\u3081\u3066\u6307\u5b9a\u3059\u308b\u3068\u304d\u3001\u500b\u5225\u30d7\u30ed\u30d1\u30c6\u30a3\u306f1\u3064\u3060\u3051\u5909\u3048\u305f\u3044\u3068\u304d\u3068\u4f7f\u3044\u5206\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/div>\n\n\n\n<table>\n<thead><tr><th>\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u306e\u66f8\u304d\u9806<\/th><th>\u5024\u306e\u4f8b<\/th><th>\u5099\u8003<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>color<\/td><td>#1a1a2e<\/td><td>\u80cc\u666f\u8272\u3002\u6700\u5f8c\u306b\u66f8\u304f\u3053\u3068\u304c\u591a\u3044<\/td><\/tr>\n<tr><td>image<\/td><td>url('bg.jpg')<\/td><td>\u753b\u50cf\u30d1\u30b9<\/td><\/tr>\n<tr><td>repeat<\/td><td>no-repeat<\/td><td>\u7e70\u308a\u8fd4\u3057\u8a2d\u5b9a<\/td><\/tr>\n<tr><td>position<\/td><td>center center<\/td><td>\u4f4d\u7f6e\u6307\u5b9a<\/td><\/tr>\n<tr><td>\/ size<\/td><td>\/ cover<\/td><td>position\u306e\u76f4\u5f8c\u306b\u300c\/\u300d\u3067\u533a\u5207\u3063\u3066size<\/td><\/tr>\n<tr><td>attachment<\/td><td>fixed<\/td><td>\u7701\u7565\u53ef\u80fd\uff08\u30c7\u30d5\u30a9\u30eb\u30c8\u306fscroll\uff09<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<div class=\"g-flow-row\" style=\"margin:24px 0;\">\n  <div class=\"g-flow-item\"><strong>background-color<\/strong><br><span style=\"font-size:12px;\">#1a1a2e<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>background-image<\/strong><br><span style=\"font-size:12px;\">url('hero.jpg')<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>background-repeat<\/strong><br><span style=\"font-size:12px;\">no-repeat<\/span><\/div>  <div class=\"g-flow-arrow\">&#8594;<\/div>  <div class=\"g-flow-item\"><strong>background-position<\/strong><br><span style=\"font-size:12px;\">center \/ cover<\/span><\/div>\n<\/div>\n\n\n<div style=\"margin:48px 0 8px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap;\"><a href=\"https:\/\/aikanri.genai-ai.co.jp\/seminar2-blog\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_content=cc-css-bg-image&#038;blog_slug=cc-css-bg-image\" target=\"_blank\" rel=\"noopener\" aria-label=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff08\u7121\u6599\u30fb1on1\u30fb60\u5206\uff09\u306e\u4e88\u7d04\u753b\u9762\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_seminar_claude_code_2026.jpg\" alt=\"Claude Code \u5b8c\u5168\u89e3\u8aac\u30bb\u30df\u30ca\u30fc\uff5c\u7d4c\u55b6\u8005\u30fb\u4f1a\u793e\u5f79\u54e1\u5c02\u7528 1on1 60\u5206 \u7121\u6599\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&#038;utm_medium=h2banner&#038;utm_campaign=cc-css-bg-image&#038;utm_content=h2-banner-kanri\" target=\"_blank\" rel=\"noopener\" aria-label=\"AI\u9b3c\u7ba1\u7406 \u516c\u5f0f\u30b5\u30a4\u30c8\u3078\" style=\"flex:1 1 280px;max-width:360px;text-decoration:none;\"><img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/05\/cta_blog_1to1.jpg\" alt=\"Claude Code\u3092\u7d4c\u55b6\u306b\u6d3b\u304b\u3057\u305f\u3044\u65b9\u3078 \u2014 AI\u9b3c\u7ba1\u7406\" style=\"width:100%;height:auto;border-radius:8px;display:block;\"><\/a><\/div>\n\n\n<div id=\"sec-08\"><\/div>\n<h2 class=\"section-header-img\" style=\"margin:32px 0 24px;border-radius:8px;overflow:hidden;background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);padding:32px 28px;color:#fff;position:relative;border:none;border-left:none;text-align:left;\">\n  <span class=\"section-number\" style=\"display:block;\">08<\/span>\n  <span class=\"section-label\" style=\"display:block;\">CLAUDE CODE CSS<\/span>\n  <span class=\"section-title\" style=\"display:block;\">Claude Code\u3067CSS\u80cc\u666f\u8a2d\u5b9a\u3092\u81ea\u52d5\u5316\u3059\u308b<\/span>\n  <span class=\"section-desc\">AI\u3078\u306e\u65e5\u672c\u8a9e\u6307\u793a\u3067background-image\u306e\u5b9f\u88c5\u3092\u9ad8\u901f\u5316\u3059\u308b<\/span>\n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">background-image\u306eCSS\u3092\u6bce\u56de\u624b\u66f8\u304d\u3059\u308b\u306e\u306f\u6642\u9593\u304c\u304b\u304b\u308a\u307e\u3059\u3002<strong>Claude Code\u3092\u4f7f\u3048\u3070\u3001\u65e5\u672c\u8a9e\u3067\u30c7\u30b6\u30a4\u30f3\u8981\u4ef6\u3092\u4f1d\u3048\u308b\u3060\u3051\u3067CSS\u30b3\u30fc\u30c9\u3092\u81ea\u52d5\u751f\u6210\u3067\u304d\u307e\u3059<\/strong>\u3002\u5f0a\u793e\uff08\u682a\u5f0f\u4f1a\u793eGENAI\uff09\u3067\u306f\u3001Web\u30b5\u30a4\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u66f4\u65b0\u3084CSS\u306e\u6700\u9069\u5316\u306bClaude Code\u3092\u6d3b\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u30d2\u30fc\u30ed\u30fc\u30a8\u30ea\u30a2\u306b\u80cc\u666f\u753b\u50cf\u3092\u8a2d\u5b9a\u3057\u3066\u3002\u4e2d\u592e\u914d\u7f6e\u3067cover\u30b5\u30a4\u30ba\u3002\u6697\u3044\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3092\u304b\u3051\u3066\u767d\u3044\u30c6\u30ad\u30b9\u30c8\u304c\u898b\u3048\u308b\u3088\u3046\u306b\u3057\u3066\u300d<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u3053\u306eCSS\u306ebackground-image\u3092WebP\u5bfe\u5fdc\u306b\u3057\u3066\u3002JPEG\u306e\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3082\u66f8\u3044\u3066\u300d<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u30b9\u30de\u30db\u3067\u306f\u5225\u306e\u5c0f\u3055\u3044\u753b\u50cf\u306b\u5207\u308a\u66ff\u3048\u308bmedia query\u3092\u66f8\u3044\u3066\u300d<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300cbackground\u4e00\u62ec\u6307\u5b9a\u3067\u66f8\u304d\u76f4\u3057\u3066\u3002\u540c\u3058\u30c7\u30b6\u30a4\u30f3\u306e\u307e\u307e1\u884c\u306b\u3057\u3066\u300d<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span>\u300c\u3053\u306e\u80cc\u666f\u753b\u50cf\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u539f\u56e0\u3092\u8abf\u3079\u3066\u4fee\u6b63\u3057\u3066\u300d<\/span><\/div>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u306b\u4fbf\u5229\u306a\u306e\u304c\u300c\u52d5\u304b\u306a\u3044\u30fb\u8868\u793a\u3055\u308c\u306a\u3044\u300d\u7cfb\u306e\u30c7\u30d0\u30c3\u30b0\u3067\u3059\u3002background-image\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u539f\u56e0\uff08\u753b\u50cf\u30d1\u30b9\u306e\u30df\u30b9\u30fb\u9ad8\u3055\u672a\u8a2d\u5b9a\u30fbbackground-color\u306e\u4e0a\u66f8\u304d\u306a\u3069\uff09\u3092Claude Code\u304c\u81ea\u52d5\u3067\u7279\u5b9a\u3057\u3066\u4fee\u6b63\u30b3\u30fc\u30c9\u3092\u63d0\u793a\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f0a\u793e\u306e\u5b9f\u611f\u3067\u306f\u3001\u5f0a\u793e\u5185\u3067CSS\u4fee\u6b63\u306b\u304b\u304b\u308b\u5de5\u6570\u304c\u903110\u6642\u9593\u2192\u90311\u6642\u9593\u306b\u524a\u6e1b\u3055\u308c\u3066\u3044\u307e\u3059\uff08\u6982\u7b97\uff09\u3002LP\u306e\u30c7\u30b6\u30a4\u30f3\u5909\u66f4\u30fb\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u306e\u66f4\u65b0\u30fb\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u306e\u8abf\u6574\u306a\u3069\u3001\u7e70\u308a\u8fd4\u3057\u767a\u751f\u3059\u308bCSS\u4f5c\u696d\u3092Claude Code\u306b\u4efb\u305b\u308b\u3053\u3068\u3067\u3001\u30c7\u30b6\u30a4\u30ca\u30fc\u3068\u30a8\u30f3\u30b8\u30cb\u30a2\u306e\u7a3c\u50cd\u304c\u5727\u7e2e\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/ceo-sugasawa.jpg\" alt=\"\u4ee3\u8868\u83c5\u6fa4\">\n    <span class=\"balloon-name\">\u4ee3\u8868\u83c5\u6fa4<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300cCSS\u306ebackground-image\u304c\u8868\u793a\u3055\u308c\u306a\u3044\u300d\u3068\u3044\u3046\u554f\u3044\u5408\u308f\u305b\u3092\u3088\u304f\u53d7\u3051\u307e\u3059\u3002\u539f\u56e0\u306e9\u5272\u306f\u2460\u753b\u50cf\u30d1\u30b9\u306e\u30df\u30b9\u2461\u8981\u7d20\u306eheight\u304c0\u306b\u306a\u3063\u3066\u3044\u308b\u2462background-repeat\u304c\u30c7\u30d5\u30a9\u30eb\u30c8repeat\u306e\u307e\u307e\u2014\u2014\u306e\u3069\u308c\u304b\u3067\u3059\u3002Claude Code\u306b\u300c\u8868\u793a\u3055\u308c\u306a\u3044\u3002\u3053\u308c\u304c\u79c1\u306eCSS\u3067\u3059\u300d\u3068\u6295\u3052\u308b\u3060\u3051\u3067\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/div>\n<\/div>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">Web\u30b5\u30a4\u30c8\u306e\u30c7\u30b6\u30a4\u30f3\u4fee\u6b63\u306fCSS\u3092\u76f4\u63a5\u89e6\u308b\u3088\u308a\u3001Claude Code\u306b\u300c\u3053\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u80cc\u666f\u3092\u5909\u3048\u305f\u3044\u300d\u3068\u65e5\u672c\u8a9e\u3067\u6307\u793a\u3059\u308b\u65b9\u304c\u3001\u975e\u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3082\u30df\u30b9\u306a\u304f\u5909\u66f4\u3067\u304d\u307e\u3059\u3002\u30b3\u30fc\u30c9\u306e\u610f\u5473\u3092\u7406\u89e3\u3057\u306a\u304c\u3089\u4f5c\u696d\u3067\u304d\u308b\u306e\u3082\u5b66\u7fd2\u52b9\u679c\u304c\u9ad8\u3044\u3067\u3059\u3002<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u89e3\u8aac\u3057\u305fbackground-image\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u7406\u89e3\u3057\u305f\u4e0a\u3067Claude Code\u3092\u4f7f\u3046\u3068\u3001AI\u304c\u51fa\u3057\u305f\u30b3\u30fc\u30c9\u306e\u610f\u56f3\u304c\u5206\u304b\u308a\u4fee\u6b63\u30fb\u6539\u5584\u306e\u6307\u793a\u3082\u7684\u78ba\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305a\u3053\u306e\u8a18\u4e8b\u3067\u57fa\u790e\u3092\u62bc\u3055\u3048\u3001\u5b9f\u88c5\u306fClaude Code\u306b\u4efb\u305b\u308b\u3068\u3044\u3046\u30cf\u30a4\u30d6\u30ea\u30c3\u30c9\u306a\u5b66\u7fd2\u304c\u6700\u3082\u52b9\u7387\u7684\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"background:#fafafa;border-radius:8px;padding:16px 20px;margin:16px 0;border-left:4px solid #dc2626;\">\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background-image<\/strong>\u306fCSS\u8981\u7d20\u306e\u80cc\u666f\u306b\u753b\u50cf\u3092\u8a2d\u5b9a\u3059\u308b\u30d7\u30ed\u30d1\u30c6\u30a3\u3002url()\u3067\u30d1\u30b9\u3092\u6307\u5b9a<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background-repeat: no-repeat<\/strong>\u304c\u5927\u304d\u306a\u753b\u50cf\u30fb\u5199\u771f\u306e\u57fa\u672c\u8a2d\u5b9a<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background-size: cover<\/strong>\u3067\u8981\u7d20\u5168\u4f53\u3092\u8986\u3044\u3001<strong>contain<\/strong>\u3067\u753b\u50cf\u5168\u4f53\u3092\u8868\u793a<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background-position<\/strong>\u3067cover\u306e\u30af\u30ea\u30c3\u30d7\u4f4d\u7f6e\u3092\u5236\u5fa1\uff08center center\u304c\u57fa\u672c\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u8907\u6570\u80cc\u666f<\/strong>\u306f\u30ab\u30f3\u30de\u533a\u5207\u308a\u3067\u6307\u5b9a\u3002\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\uff0b\u753b\u50cf\u306e\u91cd\u306d\u5408\u308f\u305b\u304c\u5b9f\u7528\u7684<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>\u30e1\u30c7\u30a3\u30a2\u30af\u30a8\u30ea<\/strong>\u3067\u30b9\u30de\u30db\u7528\u753b\u50cf\u306b\u5207\u308a\u66ff\u3048\u3066\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>background\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9<\/strong>\u30676\u30d7\u30ed\u30d1\u30c6\u30a3\u30921\u884c\u306b\u307e\u3068\u3081\u3089\u308c\u308b\uff08\u5168\u6307\u5b9a\u6642\u306e\u307f\u63a8\u5968\uff09<\/span><\/div>\n<div style=\"display:flex;align-items:flex-start;gap:8px;padding:6px 0;font-size:15px;line-height:1.6;\"><span style=\"color:#dc2626;font-size:16px;flex-shrink:0;margin-top:2px;\">&#10004;&#65039;<\/span><span><strong>Claude Code<\/strong>\u3067CSS\u306e\u81ea\u52d5\u751f\u6210\u30fb\u30d0\u30b0\u4fee\u6b63\u30fb\u6700\u9069\u5316\u3092\u9ad8\u901f\u5316\u3067\u304d\u308b<\/span><\/div>\n\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Web\u30b5\u30a4\u30c8\u306eCSS\u6700\u9069\u5316\u30fb\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u3092AI\u9b3c\u7ba1\u7406\u304c\u652f\u63f4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">background-image\u306e\u8a2d\u5b9a\u30fb\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u5b9f\u88c5\u30fb\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u307e\u3067\u3001Claude Code\u3092\u4f7f\u3063\u305fCSS\u306e\u81ea\u52d5\u5316\u3067\u5de5\u6570\u3092\u5927\u5e45\u524a\u6e1b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"balloon-wrap is-right\">\n  <div class=\"balloon-icon\">\n    <img decoding=\"async\" src=\"https:\/\/genai-ai.co.jp\/ai-kanri\/wp-content\/uploads\/2026\/04\/yamazaki-avatar.png\" alt=\"AI\u9b3c\u7ba1\u7406\u5c71\u5d0e\">\n    <span class=\"balloon-name\">AI\u9b3c\u7ba1\u7406\u5c71\u5d0e<\/span>\n  <\/div>\n  <div class=\"balloon-body\">\u300cLP\u30fb\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u304c\u53e4\u304f\u3066\u30ea\u30cb\u30e5\u30fc\u30a2\u30eb\u3057\u305f\u3044\u300d\u300c\u30b9\u30de\u30db\u3067\u80cc\u666f\u753b\u50cf\u304c\u5d29\u308c\u3066\u3044\u308b\u300d\u2014\u2014\u305d\u3046\u3044\u3063\u305fCSS\u307e\u308f\u308a\u306e\u8ab2\u984c\u3092\u3001Claude Code\u3092\u6d3b\u7528\u3057\u3066\u7d20\u65e9\u304f\u89e3\u6c7a\u3057\u307e\u3059\u3002\u7121\u6599\u76f8\u8ac7\u3067\u304a\u6c17\u8efd\u306b\u3054\u9023\u7d61\u304f\u3060\u3055\u3044\u3002<\/div>\n<\/div>\n\n\n\n<div style=\"background:linear-gradient(135deg,#1a1a1a 0%,#2a1015 100%);border-radius:16px;padding:36px 32px;margin:48px 0 16px;color:#fff;\">\n  <p style=\"font-size:13px;font-weight:700;color:#dc2626;letter-spacing:2px;margin:0 0 12px;\">NEXT STEP<\/p>\n  <p style=\"font-size:22px;font-weight:800;line-height:1.5;margin:0 0 20px;\">\u3053\u306e\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u3001\u3042\u306a\u305f\u306e\u30d3\u30b8\u30cd\u30b9\u3067<br>\u5b9f\u8df5\u3057\u3066\u307f\u307e\u305b\u3093\u304b\uff1f<\/p>\n  <div style=\"background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:12px;padding:24px;max-width:560px;margin:0 auto;\">\n    <p style=\"font-size:13px;color:#dc2626;font-weight:700;margin:0 0 8px;\">AI\u6d3b\u7528\u3092\u81ea\u793e\u3067\u56de\u305b\u308b\u3088\u3046\u306b\u306a\u308a\u305f\u3044\u65b9\u3078<\/p>\n    <p style=\"font-size:20px;font-weight:800;margin:0 0 12px;\">AI\u9b3c\u7ba1\u7406<\/p>\n    <p style=\"font-size:14px;color:rgba(255,255,255,0.75);margin:0 0 20px;line-height:1.7;\">Claude Code\u30fbCowork\u5c0e\u5165\u652f\u63f4\u304b\u3089\u696d\u52d9\u8a2d\u8a08\u30fb\u793e\u5185\u6d78\u900f\u307e\u3067\u5b9f\u8df5\u30d9\u30fc\u30b9\u3067\u4f34\u8d70\u3002\u300c\u81ea\u793e\u3067\u56de\u305b\u308b\u7d44\u7e54\u300d\u309290\u65e5\u3067\u4f5c\u308b\u7d4c\u55b6\u8005\u5411\u3051\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3002<\/p>\n    <div style=\"text-align:center;\">\n      <a href=\"https:\/\/aikanri.genai-ai.co.jp\/?utm_source=blog&utm_medium=article&utm_campaign=cc-css-bg-image&utm_content=next-step-cta\" target=\"_blank\" rel=\"noopener\" style=\"display:inline-block;background:#dc2626;color:#fff;font-weight:700;font-size:15px;padding:14px 32px;border-radius:30px;text-decoration:none;\">AI\u9b3c\u7ba1\u7406\u3092\u8a73\u3057\u304f\u898b\u308b \u2192<\/a>\n    <\/div>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q. CSS\u306ebackground-image\u3067\u753b\u50cf\u304c\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u3002\u539f\u56e0\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u4e3b\u306a\u539f\u56e0\u306f\u2460\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u304c\u9593\u9055\u3063\u3066\u3044\u308b\uff08URL\u3084\u76f8\u5bfe\u30d1\u30b9\u3092\u78ba\u8a8d\uff09\u2461\u8981\u7d20\u306eheight\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\uff08\u9ad8\u3055\u304c0\u3060\u3068\u80cc\u666f\u304c\u898b\u3048\u306a\u3044\uff09\u2462background-repeat\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306erepeat\u3067\u753b\u50cf\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3059\u304e\u308b\u2463\u30d6\u30e9\u30a6\u30b6\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u539f\u56e0\uff08Ctrl+F5\u3067\u30cf\u30fc\u30c9\u30ea\u30d5\u30ec\u30c3\u30b7\u30e5\uff09\u2014\u2014\u306e4\u3064\u3067\u3059\u3002\u958b\u767a\u8005\u30c4\u30fc\u30eb\uff08F12\uff09\u306eCSS\u30d1\u30cd\u30eb\u3067\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u9069\u7528\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u306e\u304c\u6700\u77ed\u306e\u5bfe\u51e6\u6cd5\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. background-image\u306burl()\u306a\u3057\u3067\u76f4\u63a5\u30d1\u30b9\u3092\u66f8\u3051\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u66f8\u3051\u307e\u305b\u3093\u3002background-image\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u5fc5\u305aurl()\u95a2\u6570\u3067\u753b\u50cf\u30d1\u30b9\u3092\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002url('hero.jpg')\u306e\u3088\u3046\u306b\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3067\u56f2\u3080\u306e\u304c\u63a8\u5968\u3067\u3059\u304c\u3001\u30af\u30a9\u30fc\u30c8\u306a\u3057\u306eurl(hero.jpg)\u3067\u3082\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. background-size: cover\u3068contain\u306e\u9055\u3044\u3092\u4e00\u8a00\u3067\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. cover\u306f\u300c\u753b\u50cf\u3067\u8981\u7d20\u3092\u5b8c\u5168\u306b\u8986\u3046\uff08\u306f\u307f\u51fa\u3057\u8a31\u5bb9\uff09\u300d\u3001contain\u306f\u300c\u753b\u50cf\u5168\u4f53\u3092\u8981\u7d20\u306b\u53ce\u3081\u308b\uff08\u4f59\u767d\u8a31\u5bb9\uff09\u300d\u3067\u3059\u3002\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u306fcover\u3001\u30ed\u30b4\u3084\u5168\u4f53\u3092\u898b\u305b\u305f\u3044\u30a4\u30e9\u30b9\u30c8\u306fcontain\u304c\u9069\u5207\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. background-image\u306b\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3082\u6307\u5b9a\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u3067\u304d\u307e\u3059\u3002background-image\u306b\u306furl()\u306e\u4ed6\u306blinear-gradient()\u3084radial-gradient()\u3082\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u300cbackground-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);\u300d\u306e\u3088\u3046\u306b\u66f8\u304f\u3068\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306a\u3057\u3067\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u80cc\u666f\u304c\u4f5c\u308c\u307e\u3059\u3002\u307e\u305f\u300cbackground-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.2)), url('hero.jpg');\u300d\u306e\u3088\u3046\u306b\u30ab\u30f3\u30de\u3067\u533a\u5207\u3063\u3066\u91cd\u306d\u5408\u308f\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. \u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u80cc\u666f\u753b\u50cf\u3092\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. @media\u30af\u30a8\u30ea\u3092\u4f7f\u3063\u3066\u753b\u9762\u5e45\u306b\u5fdc\u3058\u3066background-image\u3092\u5207\u308a\u66ff\u3048\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u7528\u306b\u5c0f\u3055\u3044\u30b5\u30a4\u30ba\uff08\u5e45768px\u4ee5\u4e0b\uff09\u306e\u753b\u50cf\u3092\u5225\u9014\u7528\u610f\u3057\u3066\u3001\u300c@media (max-width: 768px) { .hero { background-image: url('hero-mobile.jpg'); } }\u300d\u306e\u3088\u3046\u306b\u5207\u308a\u66ff\u3048\u307e\u3057\u3087\u3046\u3002\u307e\u305f\u300cbackground-size: cover; background-position: center top;\u300d\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u30b9\u30de\u30db\u3067\u3082\u4e0a\u90e8\u304c\u9069\u5207\u306b\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. background\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u306f\u3069\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. \u300cbackground: [color] [image] [repeat] [position] \/ [size];\u300d\u306e\u9806\u5e8f\u3067\u66f8\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u300cbackground: #1a1a2e url('hero.jpg') no-repeat center \/ cover;\u300d\u3067\u3059\u3002background-size\u306fbackground-position\u306e\u76f4\u5f8c\u306b\u300c\/\u300d\u3067\u533a\u5207\u3063\u3066\u66f8\u304f\u70b9\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b7\u30e7\u30fc\u30c8\u30cf\u30f3\u30c9\u3092\u4f7f\u3046\u3068\u7701\u7565\u3057\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u304c\u30ea\u30bb\u30c3\u30c8\u3055\u308c\u308b\u305f\u3081\u3001\u5168\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u307e\u3068\u3081\u3066\u6307\u5b9a\u3059\u308b\u5834\u5408\u306e\u307f\u4f7f\u3046\u3053\u3068\u3092\u63a8\u5968\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q. background-image\u306e\u753b\u50cf\u3092WebP\u5f62\u5f0f\u306b\u5909\u63db\u3059\u308b\u30e1\u30ea\u30c3\u30c8\u306f\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A. 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\"\u4e3b\u306a\u539f\u56e0\u306f\u2460\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9\u304c\u9593\u9055\u3063\u3066\u3044\u308b\uff08URL\u3084\u76f8\u5bfe\u30d1\u30b9\u3092\u78ba\u8a8d\uff09\u2461\u8981\u7d20\u306eheight\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\uff08\u9ad8\u3055\u304c0\u3060\u3068\u80cc\u666f\u304c\u898b\u3048\u306a\u3044\uff09\u2462background-repeat\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u306erepeat\u3067\u753b\u50cf\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3059\u304e\u308b\u2463\u30d6\u30e9\u30a6\u30b6\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u539f\u56e0\uff08Ctrl+F5\u3067\u30cf\u30fc\u30c9\u30ea\u30d5\u30ec\u30c3\u30b7\u30e5\uff09\u2014\u2014\u306e4\u3064\u3067\u3059\u3002\u958b\u767a\u8005\u30c4\u30fc\u30eb\uff08F12\uff09\u306eCSS\u30d1\u30cd\u30eb\u3067\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u9069\u7528\u3055\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3059\u308b\u306e\u304c\u6700\u77ed\u306e\u5bfe\u51e6\u6cd5\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"background-image\u306burl()\u306a\u3057\u3067\u76f4\u63a5\u30d1\u30b9\u3092\u66f8\u3051\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u66f8\u3051\u307e\u305b\u3093\u3002background-image\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u306f\u5fc5\u305aurl()\u95a2\u6570\u3067\u753b\u50cf\u30d1\u30b9\u3092\u56f2\u3080\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002url('hero.jpg')\u306e\u3088\u3046\u306b\u30b7\u30f3\u30b0\u30eb\u30af\u30a9\u30fc\u30c8\u3067\u56f2\u3080\u306e\u304c\u63a8\u5968\u3067\u3059\u304c\u3001\u30af\u30a9\u30fc\u30c8\u306a\u3057\u306eurl(hero.jpg)\u3067\u3082\u52d5\u4f5c\u3057\u307e\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"background-size: cover\u3068contain\u306e\u9055\u3044\u3092\u4e00\u8a00\u3067\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"cover\u306f\u300c\u753b\u50cf\u3067\u8981\u7d20\u3092\u5b8c\u5168\u306b\u8986\u3046\uff08\u306f\u307f\u51fa\u3057\u8a31\u5bb9\uff09\u300d\u3001contain\u306f\u300c\u753b\u50cf\u5168\u4f53\u3092\u8981\u7d20\u306b\u53ce\u3081\u308b\uff08\u4f59\u767d\u8a31\u5bb9\uff09\u300d\u3067\u3059\u3002\u30d2\u30fc\u30ed\u30fc\u753b\u50cf\u306fcover\u3001\u30ed\u30b4\u3084\u5168\u4f53\u3092\u898b\u305b\u305f\u3044\u30a4\u30e9\u30b9\u30c8\u306fcontain\u304c\u9069\u5207\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"background-image\u306b\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u3082\u6307\u5b9a\u3067\u304d\u307e\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"\u3067\u304d\u307e\u3059\u3002background-image\u306b\u306furl()\u306e\u4ed6\u306blinear-gradient()\u3084radial-gradient()\u3082\u6307\u5b9a\u3067\u304d\u307e\u3059\u3002\u300cbackground-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);\u300d\u306e\u3088\u3046\u306b\u66f8\u304f\u3068\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u306a\u3057\u3067\u30b0\u30e9\u30c7\u30fc\u30b7\u30e7\u30f3\u80cc\u666f\u304c\u4f5c\u308c\u307e\u3059\u3002\u307e\u305f\u300cbackground-image: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.2)), url('hero.jpg');\u300d\u306e\u3088\u3046\u306b\u30ab\u30f3\u30de\u3067\u533a\u5207\u3063\u3066\u91cd\u306d\u5408\u308f\u305b\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u3067\u80cc\u666f\u753b\u50cf\u3092\u30ec\u30b9\u30dd\u30f3\u30b7\u30d6\u5bfe\u5fdc\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3044\u3044\u3067\u3059\u304b\uff1f\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": 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