<csstest def="ID selectors" module="W3C Selectors" modulename="css3-modsel" number="15" rev="1.1" date="19-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>li { background-color : red }
#t1 { background-color : lime }
li#t2 { background-color : lime }
li#t3 { background-color : lime }
#t4 { background-color : red }</cssrules>

<code>
<ul xmlns="http://www.w3.org/1999/xhtml">
  <li id="t1">This list item should have a green background. because its ID is "t1"</li>
  <li id="t2">This list item should have a green background. because its ID is "t2"</li>
  <li id="t3"><span id="t44">This list item should have a green background. because the inner SPAN does not match "#t4"</span></li>
</ul>
</code>
</csstest>