HTML Code

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

    .snap-box {
      width: 320px;
      height: 220px;
      overflow: auto;
      scroll-snap-type: y mandatory;
      scroll-behavior: smooth;
      scroll-padding-block: 16px;
      border: 2px solid #2563eb;
      border-radius: 12px;
      background: #fff;
      padding: 8px;
    }

    .panel {
      scroll-snap-align: start;
      height: 150px;
      margin-bottom: 20px;
      background: #dbeafe;
      border: 2px solid #2563eb;
      border-radius: 10px;
      display: grid;
      place-items: center;
      font-weight: 700;
      color: #1e3a8a;
    }
  </style>
</head>
<body>
  <h1>Block Inset Snap Box</h1>
  <p>The container uses <code>scroll-padding-block: 16px</code> so panels snap with vertical inset.</p>
  <div class="snap-box">
    <div class="panel">Panel 1</div>
    <div class="panel">Panel 2</div>
    <div class="panel">Panel 3</div>
  </div>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

Block inset inside a scroll box