<?xml-stylesheet href="general.css"?>
<?xml-stylesheet href="#css" type="text/css"?>
<!DOCTYPE test [
 <!ATTLIST style id ID #IMPLIED>
]>
<test>
 <style id="css">
  assertion1 { color: green; }
  <!-- negative-assertion { background: red; color: yellow; } -->
  <style>
   negative-assertion { background: red; color: yellow; }
  </style>
  assertion2 { color: green; }
  <!-- negative-assertion { background: red; color: yellow; } -->
 </style>
 <assertion1>This line should be green.</assertion1>
 <negative-assertion>This line should be green.</negative-assertion>
 <assertion2>This line should be green.</assertion2>
</test>
