css3-modsel-180.xml-disabled-because-we-want-to-allow-for-expansion
<csstest def="::first-letter on inlines" module="W3C Selectors" modulename="css3-modsel" number="180" rev="1.1" date="10-november-2005" xmlns="http://www.example.org/css3tests">
<author>Ian Hickson</author>
<cssrules>
p { color: green; }
span:first-letter { background: red; color: yellow; font-size: 4em; }
span::first-letter { background: red; color: yellow; font-size: 4em; }
</cssrules>
<code>
<p xmlns="http://www.w3.org/1999/xhtml"><span>This line should be green.</span></p>
</code>
</csstest>