chromium/third_party/blink/web_tests/css3/selectors3/xml/css3-modsel-14.xml

<?xml-stylesheet href="css3-modsel-14.css" type="text/css"?>
<test>

<p xmlns="http://www.w3.org/1999/xhtml" class="t1 t2">This paragraph
should have a green background and a green thick solid border because
it carries both classes t1 and t2.</p>

<div xmlns="http://www.w3.org/1999/xhtml" class="test">This line
should be green.</div>

</test>