<header> HTML element represents introductory content, typically a group of introductory or navigational aids. It may contain some heading elements but also a logo, a search form, an author name, and other elements.
|Content categories||Flow content, palpable content.|
|Permitted content||Flow content, but with no
|Tag omission||None, both the starting and ending tag are mandatory.|
|Permitted parents||Any element that accepts flow content. Note that a
|Implicit ARIA role||banner, or no corresponding role if a descendant of an
|Permitted ARIA roles||
<header> element is not sectioning content and therefore does not introduce a new section in the outline. That said, a
<header> element is intended to usually contain the surrounding section's heading (an
h6 element), but this is not required.
<header> element didn't make its way into specifications until HTML5, it actually existed at the very beginning of HTML. As seen in the very first website, it was originally used as the
<head> element. At some point, it was decided to use a different name. This allowed
<header> to be free to fill a different role later on.
This element only includes the global attributes.
<header> <h1>Main Page Title</h1> <img src="mdn-logo-sm.png" alt="MDN logo"> </header>
<article> <header> <h2>The Planet Earth</h2> <p>Posted on Wednesday, <time datetime="2017-10-04">4 October 2017</time> by Jane Smith</p> </header> <p>We live on a planet that's blue and green, with so many things still unseen.</p> <p><a href="https://example.com/the-planet-earth/">Continue reading....</a></p> </article>
<header> element defines a
banner landmark when its context is the
<body> element. The HTML header element is not considered a banner landmark when it is descendant of an
|HTML Standard (HTML)|
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