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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>CSS line-height Variable Example</title>
  <style>
    :root {
      --body-leading: 1.6;
    }

    body {
      font-family: system-ui, sans-serif;
      padding: 1.5rem;
      line-height: var(--body-leading);
    }

    p {
      color: #475569;
    }
  </style>
</head>
<body>
  <h1>Global Line Height</h1>
  <p>Every paragraph inherits the same comfortable line height from the body element, keeping your typography consistent site-wide.</p>
  <p>Update <code>--body-leading</code> once to adjust vertical rhythm across the entire page.</p>
</body>
</html>

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CSS line-height Property - CSS variable