css3-modsel-177b.xml
<csstest def="Parsing : vs ::" module="W3C Selectors" modulename="css3-modsel" number="177b" rev="1.0" date="22-june-2003" xmlns="http://www.example.org/css3tests">
<author>Ian Hickson</author>
<cssrules>
div { color: green; }
p::first-child { color: yellow; background: red; }
</cssrules>
<code>
<div xmlns="http://www.w3.org/1999/xhtml">
<p>This line should be green.</p>
</div>
</code>
</csstest>