HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>Heading Attributes Example</title>

  <style>body{font-family:system-ui,sans-serif;margin:1.5rem;color:#334155;line-height:1.7}.highlight{color:#1d4ed8}.emphasis{color:#059669}nav{margin-bottom:1rem}nav a{color:#2563eb;margin-right:1rem}</style>

</head>

<body>

  <nav>

    <a href=#main-heading>Jump to h1</a>

    <a href=#subheading>Jump to h2</a>

  </nav>

  <main>

    <h1 id=main-heading class=highlight>Main Heading</h1>

    <h2 id=subheading class=emphasis>Subheading</h2>

    <p>Headings can have id for fragment links and class for styling.</p>

  </main>

</body>

</html>

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HTML Heading Tags — id and class Attributes