<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>"This paragraph" green background ref</title>
    <style type="text/css"><![CDATA[
    p {
    background: green;
    color: white;
    }
    ]]></style>
  </head>
  <body>
    <p>This paragraph should have a green background.</p>
  </body>
</html>