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 gap rem Example</title>
  <style>
    body {
      font-family: system-ui, sans-serif;
      padding: 1.5rem;
      line-height: 1.6;
    }

    .gallery {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(5rem, 1fr));
      gap: 1rem;
      max-width: 22rem;
    }

    .gallery-item {
      aspect-ratio: 1;
      background: #fde68a;
      border-radius: 0.35rem;
    }
  </style>
</head>
<body>
  <h1>rem-Based Gap</h1>
  <div class="gallery">
    <div class="gallery-item"></div>
    <div class="gallery-item"></div>
    <div class="gallery-item"></div>
    <div class="gallery-item"></div>
    <div class="gallery-item"></div>
    <div class="gallery-item"></div>
  </div>
</body>
</html>

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CSS gap Property - rem-Based Gallery