HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS scroll-margin-block-start Example</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      padding: 20px;
      background: #f8fafc;
    }

    .container {
      height: 220px;
      overflow-y: auto;
      scroll-behavior: smooth;
      border: 2px solid #cbd5e1;
      border-radius: 12px;
      background: #fff;
    }

    .content {
      min-height: 520px;
      padding: 16px;
      background: linear-gradient(to bottom, #fff, #e2e8f0);
    }

    .target {
      scroll-margin-block-start: 50px;
      background: #bfdbfe;
      padding: 12px 16px;
      border-radius: 8px;
      font-weight: 700;
      color: #1e3a8a;
    }

    button {
      margin-top: 12px;
      padding: 10px 16px;
      border: none;
      border-radius: 8px;
      background: #2563eb;
      color: #fff;
      font-weight: 600;
      cursor: pointer;
    }
  </style>
</head>
<body>
  <h1>CSS scroll-margin-block-start Example</h1>
  <div class="container">
    <div class="content">
      <p class="target">Scroll to me!</p>
    </div>
  </div>
  <button type="button" onclick="document.querySelector('.target').scrollIntoView({ behavior: 'smooth' })">
    Scroll to Target
  </button>
</body>
</html>

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scroll-margin-block-start on a scroll target