Elemen <header> digunakan untuk pengantar konten atau set link navigasi.

Contoh:

<!DOCTYPE html>
<html>
<body>

<article>
  <header>
    <h1>What Does WWF Do?</h1>
    <p>WWF's mission:</p>
  </header>
  <p>WWF's mission is to stop the degradation of our planet's natural environment, and build a future in which humans live in harmony with nature.</p>
</article>

</body>
</html>

CSS Default Elemen <header>

header { 
    display: block;
}