HTML Code

<!DOCTYPE html>
<html>
<head>
  <title>CSS backdrop-filter Grayscale Example</title>
  <style>
    body {
      margin: 0;
      min-height: 100vh;
      display: grid;
      place-items: center;
      background: linear-gradient(90deg, #ef4444, #f59e0b, #22c55e, #3b82f6);
      font-family: sans-serif;
    }
    .panel {
      width: min(90%, 380px);
      padding: 1.25rem;
      border-radius: 0.85rem;
      background: rgba(255, 255, 255, 0.45);
      backdrop-filter: grayscale(100%);
      color: #111827;
      text-align: center;
    }
  </style>
</head>
<body>
  <div class="panel">
    <h1>Grayscale Backdrop</h1>
    <p>Only the area behind this panel becomes grayscale.</p>
  </div>
</body>
</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

CSS backdrop-filter Property - Grayscale Backdrop