Metadata

: Content that sets up the presentation or behavior of the rest of the content. These elements are found in the head of the document. Elements:

<base>

,

<link>

,

<meta>

,

<noscript>

,

<script>

,

<style>

,

<title>

Embedded

: Content that imports other resources into the document. Elements:

<audio>

,

<video>

,

<canvas>

,

<iframe>

,

<img>

,

<math>

,

<object>

,

<svg>

Interactive

Content specifically intended for user interaction. Elements:

<a>

,

<audio>

,

<video>

,

<button>

,

<details>

,

<embed>

,

<iframe>

,

<img>

,

<input>

,

<label>

,

<object>

,

<select>

,

<textarea>

Heading

Defines a section header. Elements:

<h1>

,

<h2>

,

<h3>

,

<h4>

,

<h5>

,

<h6>

,

<hgroup>

Phrasing

This model has a number of inline level elements in common with HTML4. Elements:

<img>

,

<span>

,

<strong>

,

<label>

,

<br />

,

<small>

,

<sub>

, ...