# Description

The @namespace parser directive is used to declare an XML namespace for the style sheet. An optional reference prefix can also be specified.

This directive has the form:

    @namespace [prefix] URI;

If no prefix is specified, the rule defines the default namespace.

Important: `@namespace` directives must follow all `@charset` and `@import` directives, but precede all other at-rules and style rules in the style sheet.

# Examples

This example sets the default namespace.

    @namespace "http://www.w3.org/
      1999/xhtml";

# Browser Support

Firefox | IE | Chrome | Opera | Safari

# Miscellaneous Information

Defined In: | CSS3