<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
 <head>
  <title>Syntax and parsing of new pseudo-elements</title>
  <style type="text/css">
  ::selection { background: lime; }
  :selection { background: red; }
</style>
  <link rel="first" href="css3-modsel-1.html" title="Groups of selectors">
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 </head>
 <body onload="document.execCommand('SelectAll')">
 <p>Try selecting some text in this document. It should be have a green background.</p>
</body>
</html>