<csstest def="Attribute existence selector with declared namespace" module="W3C Selectors" modulename="css3-modsel" number="97" rev="1.1" date="12-november-2001" xmlns:a="http://www.example.org/a" xmlns:b="http://www.example.org/b" xmlns:html="http://www.w3.org/1999/xhtml" xmlns="http://www.example.org/css3tests">

<author>Daniel Glazman</author>
<author>Ian Hickson</author>

<cssrules>@namespace a url(http://www.example.org/a);
@namespace b url(http://www.example.org/b);
*|p, *|q, *|r { display : block ; margin-bottom : 1em }
*|q { background-color : red }
*[a|title] {background-color : lime }
</cssrules>

<code>
 <p title="a paragraph" xmlns="http://www.w3.org/1999/xhtml">This paragraph should be unstyled.</p>
 <q a:title="a paragraph" xmlns="http://www.example.org/a">This paragraph should have a green background.</q>
 <r b:title="a paragraph" xmlns="http://www.example.org/b">This paragraph should be unstyled.</r>
</code>
</csstest>