Name

h1, h2, h3, h4, h5, h6

Synopsis

<hn > . . . </hn >

Specifies a heading that briefly describes the section it introduces. There are six levels of headings, from h1 (most important) to h6 (least important). HTML syntax requires that headings appear in order (for example, an h2 should not precede an h1) for proper document structure. Doing so not only improves accessibility, but aids in search engine optimization (information in higher heading levels is given more weight).

Note

In HTML5, heading order can be repeated within sections of the same document, allowing greater flexibility with heading levels. This is to aid the outlining of documents and allows sections of a document to fall into the outline correctly no matter which document the section appears in. The HTML5 outline algorithm is not well supported as of this writing.

Usage

Categories:

Flow content, heading content, palpable content

Permitted contexts:

Where flow content is expected

Permitted content:

Phrasing content

Start/end tags:

Required/Required

Attributes

HTML5 Global Attributes

Example

<h1>Story Title</h1>
<p>In the beginning ... </p>
<h2>Subsection Title</h2>
<p>And so on ... </p>
<p>And so on ... </p>