HTML Header Tag
Reference showing how to use the Header tag of HTML.
The HTML header element can be used to provide header information on a page, such as a site logo, horizontal navigation menu, or search form. The header is usually the top part of a website, such as demonstrated in the screenshot below:

However, the header may also be used to markup a contents table of a section, such as the one seen on Brugbart:

The header can include a heading, such as h1-h6, or an hgroup, but it is not required.
A warning about sections
A subject of confusion, is how to use headings with the header element. The header element is not a sectioning element, and therefor doesn't start a section on its own. If you want to indicate a section, include a h1 element in your header. Just remember to use h1 for your content as well, so that your content wont incorrectly be taken as a subsection of your site logo or site name.
Attributes
| Attribute: | Value: | Description: |
| Attributes | Global Attributes | Common, Event, I18n |
Using Header
<!DOCTYPE html>
<html lang="en-US">
<head>
<title>My first Website</title>
<style type="text/css">
article, section, header { /* Older browsers need this fix, to render these elements properly */
display: block;
}
/* The below styles are only included to
demonstrate the structure of the page visually
for the purpose of this example
*/
section {
border: 1px solid #298e31;
padding: 1em;
}
article {
margin: 1em;
}
</style>
</head>
<body>
<header>
<h1><img src="http://example.com/sitelogo.png" alt="Site Logo or site name"></h1>
</header>
<article>
<header>
<ol>
<li><a href="#Section1">Section1</a></li>
<li><a href="#Section1.1">Section1.1</a></li>
<li><a href="#Section1.2">Section1.2</a></li>
<li><a href="#Section2">Section2</a></li>
</ol>
</header>
<h1>Example of how to use the section elements</h1>
<p>This is a level 1 section in the page.</p>
<section id="Section1">
<h1>This is a subsection of the main article</h1>
<p>This is a level 2 section, a subsection of the main article.</p>
<section id="Section1.1">
<h1>This is a subsection of the first subsection</h1>
<p>And this is finally a subsection to the subsection it self, creating a level 3 section.</p>
</section>
<section id="Section1.2">
<h1>This is a subsection of the first subsection</h1>
<p>And this is finally a subsection to the subsection it self, creating a level 3 section.</p>
</section>
</section>
<section id="Section2">
<h1>This is a level 1 section in the page</h1>
<p>This is another level 1 section in the page.</p>
</section>
</article>
</body>
</html>