CSS/Namespaces
NOTE: THE MATERIAL ON THIS WIKI PAGE IS BEING MIGRATED ONTO THE WEB EDUCATION COMMUNITY GROUP'S DEDICATED WIKI PAGE, AT http://www.w3.org/community/webed/wiki/CSS/Namespaces.
CSS Namespaces module defines syntax for using namespaces in CSS. It defines the @namespace rule for declaring a default namespace and for binding namespaces to namespace prefixes. It also defines a syntax for using those prefixes to represent namespace-qualified names. It does not define where such names are valid or what they mean: that depends on their context and is defined by a host language, such as Selectors, that references the syntax defined in the CSS Namespaces module.
@namespace
The @namespace at-rule declares a namespace prefix and associates it with a given namespace name (a string). This namespace prefix can then be used in namespace-qualified names such as the CSS qualified names defined below.
Example A
This rule declares a default namespace http://www.w3.org/1999/xhtml to be applied to names that have no explicit namespace component.
@namespace "http://www.w3.org/1999/xhtml";
Example B
This rule declares a namespace prefix svg that is used to apply the namespace http://www.w3.org/2000/svg where the svg namespace prefix is used.
@namespace svg "http://www.w3.org/2000/svg";