HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>Fancy Underline Example</title>

  <style>

    body {

      font-family: system-ui, sans-serif;

      margin: 0;

      padding: 1.5rem;

      background: #f8fafc;

      color: #334155;

      line-height: 1.7;

      font-size: 0.95rem;

    }

    h1 {

      margin: 0 0 0.75rem;

      font-size: 1.25rem;

      color: #0f172a;

    }

    .fancy-underline {

      text-decoration-color: red;

      text-decoration-thickness: 2px;

      text-underline-offset: 3px;

    }

  </style>

</head>

<body>

  <h1>Fancy Underline</h1>

  <p>Explore our <u class="fancy-underline">creative</u> collection.</p>

</body>

</html>

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HTML u Tag — Spelling Annotation