2025-scroll-state/scroll-state-scrollable.html at main · codegrid/2025-scroll-state · GitHub

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<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Demo</title>
  <style>
    body {
      display: flex;
      gap: 20px;
    }

    .container {
      container-type: scroll-state;
      height: 300px;
      overflow: auto;
    }

    @container scroll-state(scrollable: top) {
      p { color: red; }
    }

    .test-1 {
      width: 200px;
      border: 3px solid tomato;
    }

    .test-2 {
      display: flex;
      width: 200px;
      gap: 10px;
      border: 3px solid limegreen;
    }
  </style>
  <style>
  @supports not (container-type: scroll-state) {
    body::before {
      /* 日本語で */
      content: "お使いのブラウザは、scroll-stateのコンテナクエリーをサポートしていません。";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: black;
      color: white;
      text-align: center;
      padding: 10px;
    }
  }
  </style>
</head>
<body>
  <div class="container test-1">
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
  </div>

  <div class="container test-2">
      <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
    <p>
      The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.The quick brown fox jumps over the lazy dog.
    </p>
  </div>
</body>
</html>