HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <title>CSS overscroll-behavior-x auto Example</title>
  <style>
    body {
      font-family: sans-serif;
      padding: 2rem;
      min-width: 150vw;
      background: #f8fafc;
    }
    .panel {
      width: 300px;
      overflow-x: auto;
      border: 1px solid #cbd5e1;
      border-radius: 0.5rem;
      background: #fff;
      overscroll-behavior-x: auto;
    }
    .panel-body {
      display: flex;
      gap: 1rem;
      padding: 1rem;
      width: max-content;
    }
    .panel-body section {
      flex: 0 0 220px;
      line-height: 1.55;
      color: #334155;
    }
    .hint {
      margin-top: 1rem;
      font-size: 0.9rem;
      color: #64748b;
    }
  </style>
</head>
<body>
  <h1>Default overscroll-behavior-x: auto</h1>
  <p class="hint">Scroll this panel to the left or right edge, then continue scrolling. With <code>auto</code>, the browser may chain horizontal scroll to the page behind.</p>
  <div class="panel">
    <div class="panel-body">
      <section>Section one — scroll inside this panel first.</section>
      <section>Section two — keep reading until you reach the right edge.</section>
      <section>Section three — at the edge, extra scroll may move the page.</section>
      <section>Section four — that is normal default browser behavior.</section>
      <section>Section five — use <code>contain</code> or <code>none</code> to stop horizontal chaining.</section>
    </div>
  </div>
</body>
</html>

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CSS overscroll-behavior-x Property - auto