{"id":9647,"date":"2026-05-21T11:03:28","date_gmt":"2026-05-21T02:03:28","guid":{"rendered":"https:\/\/fastcoding.jp\/blog\/?p=9647"},"modified":"2026-05-21T11:03:36","modified_gmt":"2026-05-21T02:03:36","slug":"css-scope-style-isolation","status":"publish","type":"post","link":"https:\/\/fastcoding.jp\/blog\/all\/html-css\/css-scope-style-isolation\/","title":{"rendered":"\u30b9\u30bf\u30a4\u30eb\u306e&#8221;\u5dfb\u304d\u6dfb\u3048\u4e8b\u6545&#8221;\u3092\u9632\u3050\uff01CSS @scope\u3067\u5f71\u97ff\u7bc4\u56f2\u3092\u7d5e\u308b\u5b9f\u88c5\u8853"},"content":{"rendered":"<div class=\"the_content\">\n<p>\u304a\u306f\u3088\u3046\u3054\u3056\u3044\u307e\u3059\uff01\u682a\u5f0f\u4f1a\u793e\u30d5\u30a1\u30b9\u30c8\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u50cd\u304f\u304a\u304b\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u6700\u8fd1\u3001\u5b50\u3069\u3082\u305f\u3061\u3068\u4e00\u7dd2\u306b\u304a\u7d75\u63cf\u304d\u3092\u3057\u3066\u3044\u305f\u3093\u3067\u3059\u304c\u3001\u4e0b\u306e\u5b50\u304c\u7d75\u306e\u5177\u3092\u3079\u305f\u3063\u3068\u5857\u3063\u305f\u3089\u3001\u96a3\u306b\u7f6e\u3044\u3066\u3044\u305f\u4e0a\u306e\u5b50\u306e\u753b\u7528\u7d19\u306b\u307e\u3067\u8272\u304c\u306f\u307f\u51fa\u3057\u3066\u3057\u307e\u3063\u3066\u3002\u4e0a\u306e\u5b50\u304c\u300c\u3053\u3063\u3061\u306b\u6765\u3093\u3068\u3044\u3066\u30fc\uff01\u300d\u3068\u6012\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u5206\u3051\u3066\u63cf\u3044\u3066\u3044\u305f\u3064\u3082\u308a\u306a\u306e\u306b\u3001\u5883\u754c\u304c\u66d6\u6627\u3060\u3068\u96a3\u306b\u5f71\u97ff\u304c\u51fa\u3061\u3083\u3046\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<p>CSS\u3067\u3082\u307e\u3063\u305f\u304f\u540c\u3058\u3053\u3068\u304c\u8d77\u304d\u308b\u3093\u3067\u3059\u3002\u8907\u96d1\u306a\u30ec\u30a4\u30a2\u30a6\u30c8\u3092\u7d44\u3093\u3067\u3044\u308b\u3068\u3001\u3042\u308b\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u66f8\u3044\u305f\u30b9\u30bf\u30a4\u30eb\u304c\u5225\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u306b\u307e\u3067\u5f71\u97ff\u3057\u3066\u3057\u307e\u3046\u300c\u5dfb\u304d\u6dfb\u3048\u4e8b\u6545\u300d\u3002<code>.title<\/code>\u3068\u304b<code>.text<\/code>\u307f\u305f\u3044\u306a\u6c4e\u7528\u7684\u306a\u30af\u30e9\u30b9\u540d\u3092\u4f7f\u3063\u3066\u3044\u308b\u3068\u3001\u610f\u56f3\u3057\u306a\u3044\u5834\u6240\u306e\u30c7\u30b6\u30a4\u30f3\u304c\u5909\u308f\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u307e\u3055\u306b\u3001\u7d75\u306e\u5177\u304c\u306f\u307f\u51fa\u3059\u306e\u3068\u540c\u3058\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u56de\u7d39\u4ecb\u3059\u308b<strong>CSS <code>@scope<\/code><\/strong>\u306f\u3001\u307e\u3055\u306b\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u65b0\u3057\u3044CSS\u6a5f\u80fd\u3067\u3059\u3002\u300c\u3053\u306e\u30b9\u30bf\u30a4\u30eb\u306f\u3053\u3053\u304b\u3089\u3053\u3053\u307e\u3067\u3060\u3051\u300d\u3068\u7bc4\u56f2\u3092\u9650\u5b9a\u3067\u304d\u308b\u306e\u3067\u3001\u8907\u96d1\u306a\u30da\u30fc\u30b8\u3067\u3082\u30b9\u30bf\u30a4\u30eb\u304c\u6f0f\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CSS\u306e\u300c\u5f71\u97ff\u7bc4\u56f2\u300d\u554f\u984c\u3068\u306f<\/h2>\n\n\n\n<p>\u307e\u305a\u3001\u3069\u3046\u3044\u3046\u5834\u9762\u3067\u56f0\u308b\u306e\u304b\u3092\u5177\u4f53\u7684\u306b\u898b\u3066\u307f\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070\u3001\u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u306b\u300c\u304a\u77e5\u3089\u305b\u30bb\u30af\u30b7\u30e7\u30f3\u300d\u3068\u300c\u30b5\u30fc\u30d3\u30b9\u7d39\u4ecb\u30bb\u30af\u30b7\u30e7\u30f3\u300d\u304c\u3042\u308b\u3068\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u306b\u3082<code>.title<\/code>\u3068\u3044\u3046\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/* \u304a\u77e5\u3089\u305b\u30bb\u30af\u30b7\u30e7\u30f3\u7528\u306e\u3064\u3082\u308a\u3067\u66f8\u3044\u305f *\/\n.title {\n  font-size: 18px;\n  color: #1e40af;\n  border-bottom: 2px solid #1e40af;\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u308c\u3001\u30b5\u30fc\u30d3\u30b9\u7d39\u4ecb\u30bb\u30af\u30b7\u30e7\u30f3\u306e<code>.title<\/code>\u306b\u3082\u52b9\u3044\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u300c\u304a\u77e5\u3089\u305b\u306e\u898b\u51fa\u3057\u3060\u3051\u9752\u304f\u3057\u305f\u304b\u3063\u305f\u306e\u306b\u3001\u30b5\u30fc\u30d3\u30b9\u7d39\u4ecb\u306e\u898b\u51fa\u3057\u307e\u3067\u9752\u304f\u306a\u3063\u3061\u3083\u3063\u305f\u300d\u3068\u3044\u3046\u4e8b\u6545\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5f93\u6765\u306e\u5bfe\u51e6\u6cd5\u306f\u3001\u30af\u30e9\u30b9\u540d\u3092\u9577\u304f\u3059\u308b\u3053\u3068\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>.news-section__title {\n  font-size: 18px;\n  color: #1e40af;\n}\n\n.service-section__title {\n  font-size: 20px;\n  color: #111827;\n}<\/code><\/pre>\n\n\n\n<p>BEM\u8a18\u6cd5\uff08Block__Element&#8211;Modifier\uff09\u3067\u547d\u540d\u898f\u5247\u3092\u53b3\u683c\u306b\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002\u3053\u308c\u3067\u89e3\u6c7a\u306f\u3057\u307e\u3059\u304c\u3001\u30af\u30e9\u30b9\u540d\u304c\u3069\u3093\u3069\u3093\u9577\u304f\u306a\u308a\u307e\u3059\u3002HTML\u5074\u3082<code>class=\"news-section__title news-section__title--featured\"<\/code>\u306e\u3088\u3046\u306b\u81a8\u3089\u3093\u3067\u3044\u304f\u3002\u30c1\u30fc\u30e0\u3067\u958b\u767a\u3057\u3066\u3044\u308b\u3068\u3001\u547d\u540d\u898f\u5247\u304c\u7d71\u4e00\u3055\u308c\u306a\u3044\u3053\u3068\u3082\u591a\u304f\u3066\u3001\u7d50\u5c40\u3050\u3061\u3083\u3050\u3061\u3083\u306b\u306a\u308a\u304c\u3061\u306a\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">CSS @scope\u3067\u300c\u30b9\u30bf\u30a4\u30eb\u306e\u58c1\u300d\u3092\u4f5c\u308b<\/h2>\n\n\n\n<p><code>@scope<\/code>\u3092\u4f7f\u3046\u3068\u3001\u3053\u3046\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@scope (.news-section) {\n  .title {\n    font-size: 18px;\n    color: #1e40af;\n    border-bottom: 2px solid #1e40af;\n  }\n  \n  .text {\n    font-size: 14px;\n    line-height: 1.8;\n  }\n}\n\n@scope (.service-section) {\n  .title {\n    font-size: 20px;\n    color: #111827;\n  }\n  \n  .text {\n    font-size: 15px;\n    line-height: 1.7;\n  }\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;section class=\"news-section\"&gt;\n  &lt;h2 class=\"title\"&gt;\u304a\u77e5\u3089\u305b&lt;\/h2&gt;\n  &lt;p class=\"text\"&gt;\u65b0\u30b5\u30fc\u30d3\u30b9\u3092\u958b\u59cb\u3057\u307e\u3057\u305f\u3002&lt;\/p&gt;\n&lt;\/section&gt;\n\n&lt;section class=\"service-section\"&gt;\n  &lt;h2 class=\"title\"&gt;\u30b5\u30fc\u30d3\u30b9\u7d39\u4ecb&lt;\/h2&gt;\n  &lt;p class=\"text\"&gt;Web\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u4e2d\u5fc3\u306b\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002&lt;\/p&gt;\n&lt;\/section&gt;<\/code><\/pre>\n\n\n\n<p><code>@scope (.news-section)<\/code>\u306e\u4e2d\u306b\u66f8\u3044\u305f<code>.title<\/code>\u306e\u30b9\u30bf\u30a4\u30eb\u306f\u3001<code>.news-section<\/code>\u306e\u4e2d\u306b\u3042\u308b<code>.title<\/code>\u306b\u3057\u304b\u9069\u7528\u3055\u308c\u307e\u305b\u3093\u3002<code>.service-section<\/code>\u306e\u4e2d\u306e<code>.title<\/code>\u306b\u306f\u4e00\u5207\u5f71\u97ff\u3057\u306a\u3044\u3002\u30af\u30e9\u30b9\u540d\u3092\u9577\u304f\u3057\u306a\u304f\u3066\u3082\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u540d\u524d\u306e\u307e\u307e\u5b89\u5168\u306b\u4f7f\u3048\u308b\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u591c\u3001\u5b50\u3069\u3082\u304c\u5bdd\u305f\u5f8c\u306b\u3053\u308c\u3092\u521d\u3081\u3066\u8a66\u3057\u305f\u3068\u304d\u3001\u300c\u3082\u3063\u3068\u65e9\u304f\u6b32\u3057\u304b\u3063\u305f\u2026\u2026\u300d\u3068\u601d\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">@scope\u306e\u300c\u4e0b\u9650\u300d\u6307\u5b9a\u304c\u3059\u3054\u3044<\/h2>\n\n\n\n<p><code>@scope<\/code>\u306b\u306f\u3082\u3046\u3072\u3068\u3064\u5f37\u529b\u306a\u6a5f\u80fd\u304c\u3042\u308a\u307e\u3059\u3002<strong>\u30b9\u30bf\u30a4\u30eb\u306e\u4e0b\u9650<\/strong>\u3092\u6307\u5b9a\u3067\u304d\u308b\u3093\u3067\u3059\u3002<code>to<\/code>\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@scope (.card) to (.card__slot) {\n  p {\n    font-size: 14px;\n    color: #374151;\n  }\n  \n  a {\n    color: #2563eb;\n  }\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"card\"&gt;\n  &lt;h3&gt;\u8a18\u4e8b\u30bf\u30a4\u30c8\u30eb&lt;\/h3&gt;\n  &lt;p&gt;\u3053\u306e\u6bb5\u843d\u306b\u306f\u30b9\u30bf\u30a4\u30eb\u304c\u52b9\u304d\u307e\u3059\u3002&lt;\/p&gt;\n  \n  &lt;div class=\"card__slot\"&gt;\n    &lt;!-- \u3053\u3053\u304b\u3089\u5148\u306f @scope \u306e\u7bc4\u56f2\u5916 --&gt;\n    &lt;p&gt;\u3053\u306e\u6bb5\u843d\u306b\u306f\u30b9\u30bf\u30a4\u30eb\u304c\u52b9\u304d\u307e\u305b\u3093\u3002&lt;\/p&gt;\n    &lt;a href=\"#\"&gt;\u3053\u306e\u30ea\u30f3\u30af\u3082\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3002&lt;\/a&gt;\n  &lt;\/div&gt;\n&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<p><code>@scope (.card) to (.card__slot)<\/code>\u306f\u300c<code>.card<\/code>\u306e\u4e2d\u3060\u3051\u3069\u3001<code>.card__slot<\/code>\u306e\u4e2d\u306f\u9664\u304f\u300d\u3068\u3044\u3046\u610f\u5473\u3067\u3059\u3002\u30ab\u30fc\u30c9\u306e\u5916\u5074\u90e8\u5206\u306b\u3060\u3051\u30b9\u30bf\u30a4\u30eb\u3092\u5f53\u3066\u3066\u3001\u30b9\u30ed\u30c3\u30c8\uff08\u5dee\u3057\u8fbc\u307f\u30a8\u30ea\u30a2\uff09\u306e\u4e2d\u8eab\u306f\u5f71\u97ff\u3092\u53d7\u3051\u306a\u3044\u3088\u3046\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u304c\u4fbf\u5229\u306a\u306e\u306f\u3001CMS\u3084\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u30d9\u30fc\u30b9\u306e\u958b\u767a\u3067\u3059\u3002\u30ab\u30fc\u30c9\u306e\u4e2d\u306b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u81ea\u7531\u306b\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u5165\u308c\u308b\u30a8\u30ea\u30a2\u304c\u3042\u308b\u3068\u304d\u3001\u30ab\u30fc\u30c9\u81ea\u4f53\u306e\u30b9\u30bf\u30a4\u30eb\u304c\u305d\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u6f0f\u308c\u3066\u3057\u307e\u3046\u554f\u984c\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u8df51\uff1a\u30ab\u30fc\u30c9\u30b0\u30ea\u30c3\u30c9\u3067\u306e\u30b9\u30bf\u30a4\u30eb\u5206\u96e2<\/h2>\n\n\n\n<p>\u30ab\u30fc\u30c9\u306e\u7a2e\u985e\u304c\u8907\u6570\u3042\u308b\u3068\u3001\u30b9\u30bf\u30a4\u30eb\u306e\u885d\u7a81\u304c\u8d77\u304d\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<code>@scope<\/code>\u3092\u4f7f\u3048\u3070\u3001\u30ab\u30fc\u30c9\u306e\u7a2e\u985e\u3054\u3068\u306b\u30b9\u30bf\u30a4\u30eb\u3092\u5b8c\u5168\u306b\u5206\u96e2\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;div class=\"card-grid\"&gt;\n  &lt;article class=\"card-news\"&gt;\n    &lt;h3 class=\"heading\"&gt;\u304a\u77e5\u3089\u305b\u30bf\u30a4\u30c8\u30eb&lt;\/h3&gt;\n    &lt;time class=\"date\"&gt;2026.05.09&lt;\/time&gt;\n    &lt;p class=\"summary\"&gt;\u304a\u77e5\u3089\u305b\u306e\u6982\u8981\u30c6\u30ad\u30b9\u30c8\u3067\u3059\u3002&lt;\/p&gt;\n  &lt;\/article&gt;\n  \n  &lt;article class=\"card-service\"&gt;\n    &lt;h3 class=\"heading\"&gt;\u30b5\u30fc\u30d3\u30b9\u540d&lt;\/h3&gt;\n    &lt;p class=\"summary\"&gt;\u30b5\u30fc\u30d3\u30b9\u306e\u8aac\u660e\u30c6\u30ad\u30b9\u30c8\u3067\u3059\u3002&lt;\/p&gt;\n    &lt;a href=\"#\" class=\"link\"&gt;\u8a73\u3057\u304f\u898b\u308b&lt;\/a&gt;\n  &lt;\/article&gt;\n&lt;\/div&gt;<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>.card-grid {\n  display: grid;\n  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));\n  gap: 24px;\n}\n\n@scope (.card-news) {\n  :scope {\n    padding: 20px;\n    background: #fff;\n    border-left: 4px solid #2563eb;\n    border-radius: 8px;\n  }\n  \n  .heading {\n    font-size: 16px;\n    color: #111827;\n    margin-bottom: 4px;\n  }\n  \n  .date {\n    font-size: 12px;\n    color: #6b7280;\n  }\n  \n  .summary {\n    font-size: 14px;\n    margin-top: 12px;\n    line-height: 1.7;\n  }\n}\n\n@scope (.card-service) {\n  :scope {\n    padding: 24px;\n    background: #f0f9ff;\n    border-radius: 12px;\n    text-align: center;\n  }\n  \n  .heading {\n    font-size: 18px;\n    color: #1e40af;\n    margin-bottom: 12px;\n  }\n  \n  .summary {\n    font-size: 14px;\n    color: #374151;\n    line-height: 1.7;\n  }\n  \n  .link {\n    display: inline-block;\n    margin-top: 16px;\n    padding: 10px 24px;\n    background: #2563eb;\n    color: #fff;\n    text-decoration: none;\n    border-radius: 6px;\n    font-size: 14px;\n  }\n}<\/code><\/pre>\n\n\n\n<p><code>.heading<\/code>\u3084<code>.summary<\/code>\u3068\u3044\u3046\u30b7\u30f3\u30d7\u30eb\u306a\u30af\u30e9\u30b9\u540d\u3092\u305d\u306e\u307e\u307e\u4f7f\u3048\u3066\u3044\u307e\u3059\u3002BEM\u3067<code>.card-news__heading<\/code>\u3068\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u305b\u3093\u3002HTML\u304c\u3059\u3063\u304d\u308a\u3057\u3066\u3001\u30b3\u30fc\u30c9\u30ec\u30d3\u30e5\u30fc\u3082\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>:scope<\/code>\u30bb\u30ec\u30af\u30bf\u306f\u3001<code>@scope<\/code>\u306e\u30eb\u30fc\u30c8\u8981\u7d20\uff08\u3053\u306e\u5834\u5408\u306f<code>.card-news<\/code>\u3084<code>.card-service<\/code>\u81ea\u4f53\uff09\u3092\u6307\u3059\u30bb\u30ec\u30af\u30bf\u3067\u3059\u3002\u89aa\u8981\u7d20\u81ea\u4f53\u306b\u30b9\u30bf\u30a4\u30eb\u3092\u5f53\u3066\u305f\u3044\u3068\u304d\u306b\u4f7f\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u8df52\uff1a\u30d8\u30c3\u30c0\u30fc\u30fb\u30d5\u30c3\u30bf\u30fc\u30fb\u30e1\u30a4\u30f3\u306e\u5206\u96e2<\/h2>\n\n\n\n<p>\u30b5\u30a4\u30c8\u5168\u4f53\u3067\u300c\u30d8\u30c3\u30c0\u30fc\u5185\u306e<code>.link<\/code>\u300d\u300c\u30d5\u30c3\u30bf\u30fc\u5185\u306e<code>.link<\/code>\u300d\u300c\u30e1\u30a4\u30f3\u30b3\u30f3\u30c6\u30f3\u30c4\u5185\u306e<code>.link<\/code>\u300d\u306e\u898b\u305f\u76ee\u3092\u5909\u3048\u305f\u3044\u5834\u9762\u306f\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@scope (header) {\n  .link {\n    color: #fff;\n    font-weight: 600;\n    text-decoration: none;\n  }\n  \n  .link:hover {\n    opacity: 0.8;\n  }\n}\n\n@scope (main) {\n  .link {\n    color: #2563eb;\n    text-decoration: underline;\n  }\n  \n  .link:hover {\n    color: #1d4ed8;\n  }\n}\n\n@scope (footer) {\n  .link {\n    color: #9ca3af;\n    font-size: 13px;\n    text-decoration: none;\n  }\n  \n  .link:hover {\n    color: #d1d5db;\n  }\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u308c\u307e\u3067\u306f<code>header .link<\/code>\u306e\u3088\u3046\u306b\u5b50\u5b6b\u30bb\u30ec\u30af\u30bf\u3067\u66f8\u3044\u3066\u3044\u307e\u3057\u305f\u3002\u52d5\u4f5c\u3068\u3057\u3066\u306f\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001<code>@scope<\/code>\u306e\u307b\u3046\u304c<strong>\u8a73\u7d30\u5ea6\uff08specificity\uff09\u304c\u4f4e\u304f\u4fdd\u305f\u308c\u308b<\/strong>\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5b50\u5b6b\u30bb\u30ec\u30af\u30bf\u3060\u3068\u8a73\u7d30\u5ea6\u304c\u7a4d\u307f\u91cd\u306a\u3063\u3066\u3001\u3042\u3068\u304b\u3089\u4e0a\u66f8\u304d\u3057\u305f\u3044\u3068\u304d\u306b<code>!important<\/code>\u304c\u5fc5\u8981\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308b\u3093\u3067\u3059\u3088\u306d\u3002<code>@scope<\/code>\u3067\u306f\u3001\u30b9\u30b3\u30fc\u30d7\u30eb\u30fc\u30c8\u90e8\u5206\uff08<code>header<\/code>\u306a\u3069\uff09\u304c\u8a73\u7d30\u5ea6\u306b\u52a0\u7b97\u3055\u308c\u307e\u305b\u3093\u3002\u5185\u90e8\u306e\u30bb\u30ec\u30af\u30bf\u5358\u4f53\u306e\u8a73\u7d30\u5ea6\u3060\u3051\u3067\u8a55\u4fa1\u3055\u308c\u308b\u306e\u3067\u3001\u4e0a\u66f8\u304d\u3082\u81ea\u7136\u306b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9f\u8df53\uff1a\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u57cb\u3081\u8fbc\u307f\u3078\u306e\u30b9\u30bf\u30a4\u30eb\u6f0f\u308c\u9632\u6b62<\/h2>\n\n\n\n<p>\u30d6\u30ed\u30b0\u3084LP\u306b\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\uff08\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u3001\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u306a\u3069\uff09\u3092\u57cb\u3081\u8fbc\u3080\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u30da\u30fc\u30b8\u306e\u30b0\u30ed\u30fc\u30d0\u30ebCSS\u304c\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u5185\u306b\u6f0f\u308c\u3066\u3001\u898b\u305f\u76ee\u304c\u5d29\u308c\u308b\u3053\u3068\u304c\u3042\u308b\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@scope (.page-content) to (.widget-embed) {\n  p {\n    font-size: 16px;\n    line-height: 1.8;\n    color: #374151;\n  }\n  \n  h2 {\n    font-size: 24px;\n    color: #111827;\n    margin-top: 40px;\n  }\n  \n  img {\n    max-width: 100%;\n    border-radius: 8px;\n  }\n}<\/code><\/pre>\n\n\n\n<p><code>.page-content<\/code>\u306e\u4e2d\u306b\u306f\u30b9\u30bf\u30a4\u30eb\u3092\u5f53\u3066\u308b\u3051\u3069\u3001<code>.widget-embed<\/code>\u306e\u4e2d\u306b\u306f\u4e00\u5207\u5f71\u97ff\u3057\u306a\u3044\u3002\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u304c\u81ea\u524d\u306eCSS\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408\u3067\u3082\u3001\u5e72\u6e09\u3092\u907f\u3051\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3042\u308b\u6848\u4ef6\u3067\u3001\u304a\u554f\u3044\u5408\u308f\u305b\u30d5\u30a9\u30fc\u30e0\u306e\u30a6\u30a3\u30b8\u30a7\u30c3\u30c8\u3092\u57cb\u3081\u8fbc\u3093\u3060\u3089\u3001\u30da\u30fc\u30b8\u306eCSS<code>img { border-radius: 8px }<\/code>\u304c\u30d5\u30a9\u30fc\u30e0\u5185\u306e\u30a2\u30a4\u30b3\u30f3\u753b\u50cf\u306b\u307e\u3067\u52b9\u3044\u3066\u3057\u307e\u3063\u305f\u3053\u3068\u304c\u3042\u308a\u307e\u3057\u305f\u3002<code>@scope<\/code>\u306e<code>to<\/code>\u6307\u5b9a\u3067\u3001\u3053\u306e\u554f\u984c\u304c\u304d\u308c\u3044\u306b\u89e3\u6c7a\u3067\u304d\u305f\u3093\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30d6\u30e9\u30a6\u30b6\u5bfe\u5fdc\u72b6\u6cc1<\/h2>\n\n\n\n<p><code>@scope<\/code>\u306e\u30d6\u30e9\u30a6\u30b6\u5bfe\u5fdc\u72b6\u6cc1\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff082026\u5e745\u6708\u6642\u70b9\uff09\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr><th>\u30d6\u30e9\u30a6\u30b6<\/th><th>\u5bfe\u5fdc\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u30ea\u30ea\u30fc\u30b9\u6642\u671f<\/th><\/tr>\n<\/thead>\n<tbody>\n<tr><td>Chrome<\/td><td>118\u4ee5\u964d<\/td><td>2023\u5e7410\u6708<\/td><\/tr>\n<tr><td>Edge<\/td><td>118\u4ee5\u964d<\/td><td>2023\u5e7410\u6708<\/td><\/tr>\n<tr><td>Safari<\/td><td>17.4\u4ee5\u964d<\/td><td>2024\u5e743\u6708<\/td><\/tr>\n<tr><td>Firefox<\/td><td>146\u4ee5\u964d<\/td><td>2025\u5e7412\u6708<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p>2025\u5e7412\u6708\u306eFirefox 146\u3067\u5168\u4e3b\u8981\u30d6\u30e9\u30a6\u30b6\u304c\u5bfe\u5fdc\u5b8c\u4e86\u3057\u307e\u3057\u305f\u30022026\u5e74\u73fe\u5728\u3001\u65b0\u898f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306f\u5b89\u5fc3\u3057\u3066\u4f7f\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p><code>@scope<\/code>\u306b\u672a\u5bfe\u5fdc\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u3001<code>@scope<\/code>\u30d6\u30ed\u30c3\u30af\u5185\u306e\u30b9\u30bf\u30a4\u30eb\u304c\u4e38\u3054\u3068\u7121\u8996\u3055\u308c\u307e\u3059\u3002\u30b9\u30bf\u30a4\u30eb\u304c\u6f0f\u308c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u305d\u306e\u30b9\u30bf\u30a4\u30eb\u81ea\u4f53\u304c\u9069\u7528\u3055\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u306a\u306e\u3067\u3001<code>@scope<\/code>\u306e\u5916\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u7528\u306e\u30b9\u30bf\u30a4\u30eb\u3092\u5225\u9014\u66f8\u3044\u3066\u304a\u304f\u3068\u3001\u672a\u5bfe\u5fdc\u30d6\u30e9\u30a6\u30b6\u3067\u3082\u30c7\u30b6\u30a4\u30f3\u304c\u5d29\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u58ca\u308c\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u3001\u6bb5\u968e\u7684\u306b\u5c0e\u5165\u3057\u3084\u3059\u3044\u8a2d\u8a08\u306a\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">@scope\u3068BEM\u3001CSS Modules\u3068\u306e\u6bd4\u8f03<\/h2>\n\n\n\n<p>\u300cBEM\u3084CSS Modules\u3067\u3082\u540c\u3058\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u306f\uff1f\u300d\u3068\u601d\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n<thead>\n<tr><th>\u65b9\u6cd5<\/th><th>\u30b9\u30bf\u30a4\u30eb\u5206\u96e2<\/th><th>\u30d3\u30eb\u30c9\u4e0d\u8981<\/th><th>HTML\u7c21\u6f54<\/th><th>\u8a73\u7d30\u5ea6\u306e\u5236\u5fa1<\/th><\/tr>\n<\/thead>\n<tbody>\n<tr><td>BEM\uff08\u547d\u540d\u898f\u5247\uff09<\/td><td>\u25cb<\/td><td>\u25cb<\/td><td>\u00d7\uff08\u30af\u30e9\u30b9\u540d\u304c\u9577\u3044\uff09<\/td><td>\u25b3<\/td><\/tr>\n<tr><td>CSS Modules<\/td><td>\u25cb<\/td><td>\u00d7\uff08\u30d3\u30eb\u30c9\u5fc5\u8981\uff09<\/td><td>\u25b3\uff08\u30bd\u30fc\u30b9\u306f\u7c21\u6f54\u3001\u751f\u6210HTML\u306f\u9577\u3044\uff09<\/td><td>\u25b3\uff08\u540d\u524d\u306e\u4e00\u610f\u5316\u3067\u885d\u7a81\u56de\u907f\uff09<\/td><\/tr>\n<tr><td>@scope<\/td><td>\u25cb<\/td><td>\u25cb<\/td><td>\u25cb<\/td><td>\u25cb<\/td><\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p><code>@scope<\/code>\u306e\u5f37\u307f\u306f\u3001<strong>\u30d3\u30eb\u30c9\u30c4\u30fc\u30eb\u306a\u3057\u3067\u4f7f\u3048\u3066\u3001HTML\u3082\u30b7\u30f3\u30d7\u30eb\u306b\u4fdd\u3066\u308b<\/strong>\u3053\u3068\u3067\u3059\u3002WordPress\u306e\u30c6\u30fc\u30de\u958b\u767a\u3084\u3001\u30d3\u30eb\u30c9\u74b0\u5883\u304c\u306a\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3082\u5c0e\u5165\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>React\/Vue\u3092\u4f7f\u3063\u3066\u3044\u308b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306fCSS Modules\u3084scoped CSS\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u9759\u7684\u30b5\u30a4\u30c8\u3084CMS\u6848\u4ef6\u3067\u306f<code>@scope<\/code>\u306e\u307b\u3046\u304c\u624b\u8efd\u306b\u5c0e\u5165\u3067\u304d\u308b\u3093\u3067\u3059\u3088\u306d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u4eca\u56de\u306f\u3001CSS <code>@scope<\/code>\u3092\u4f7f\u3063\u3066\u30b9\u30bf\u30a4\u30eb\u306e\u5f71\u97ff\u7bc4\u56f2\u3092\u7d5e\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u62bc\u3055\u3048\u3066\u304a\u304d\u305f\u3044\u30dd\u30a4\u30f3\u30c8\u306f\u4ee5\u4e0b\u306e4\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>@scope (.parent) { }<\/code> \u3067\u3001\u30b9\u30bf\u30a4\u30eb\u306e\u9069\u7528\u7bc4\u56f2\u3092\u7279\u5b9a\u306e\u89aa\u8981\u7d20\u306e\u4e2d\u306b\u9650\u5b9a\u3067\u304d\u308b<\/li>\n<li><code>@scope (.parent) to (.child) { }<\/code> 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