<csstest def="NEGATED :root pseudo-class" module="W3C Selectors" modulename="css3-modsel" number="72b" rev="1.0" date="27-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>html:not(:root), test:not(:root) { background-color: red; }
p { background-color: lime; }
</cssrules>
<code>
 <div xmlns="http://www.w3.org/1999/xhtml">
  <p>This paragraph should have a green background and there should be no red anywhere.</p>
 </div>
</code>
</csstest>