# HTML <html> Tag

## Example

A simple HTML5 document:

<!DOCTYPE HTML>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
The content of the document......
</body>
</html>
Try it Yourself »

## Definition and Usage

The <html> tag tells the browser that this is an HTML document.

The <html> tag represents the root of an HTML document.

The <html> tag is the container for all other HTML elements (except for the <!DOCTYPE> tag).

## Browser Support

Element |  |  |  |  |
--- | --- | --- | --- | --- | ---
<html> | Yes | Yes | Yes | Yes | Yes

## Differences Between HTML 4.01 and HTML5

HTML5 has added a new attribute: manifest.

## Differences Between HTML and XHTML

The xmlns attribute is required in XHTML, but is invalid in HTML.

However, the HTML validator at http://w3.org does not complain when the xmlns attribute is missing in an XHTML document. This is because the namespace "xmlns=http://www.w3.org/1999/xhtml" is default, and will be added to the <html> tag even if you do not include it.

## Attributes

= New in HTML5.

Attribute | Value | Description
--- | --- | ---
manifest | URL | Specifies the address of the document's cache manifest (for offline browsing)
xmlns | http://www.w3.org/1999/xhtml | Specifies the XML namespace attribute (If you need your content to conform to XHTML)

## Global Attributes

The <html> tag also supports the Global Attributes in HTML.

## Related Pages

HTML tutorial: HTML Introduction

HTML DOM reference: HTML Object

## Default CSS Settings

Most browsers will display the <html> element with the following default values:

html {
display: block;
}
html:focus {
outline: none;
}

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