05.xml" type="application/xhtml+xml"/>
  <link rel="help" href="http://www.w3.org/TR/CSS21/colors.html#background"/>
  <style type="text/css">* { margin: 0; padding: 0 }
   html { background: white url(support/background-alpha-test.png) fixed; color: black; }
   p { background: white; color: black; padding: 0.25em; border: thin solid black; display: inline; line-height: 2; }
   div { height: 512px; width: 512px; margin: 5em auto 100em; background: url(support/background-alpha-test.png) fixed; border: 1px do