<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>

 <head>

  <title>CSS Reftest Reference</title>
  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">

  <style type="text/css">
  html, body {height: 100%;} 
  
  body
  {
  margin: 0px;
  overflow: hidden;
  }
  
  div#grand-parent
  {
  background: url("support/cat.png") 21px 21px;
  height: 100%;
  padding: 1em;
  }
  
  div#parent
  {
  border: blue solid 5px;
  padding: 2em;
  }
  
  div#child
  {
  border: gray solid medium;
  padding: 3em;
  }
  
  span
  {
  background-color: yellow;
  font-size: large;
  }
  </style>

 </head>

 <body>

  <div id="grand-parent">
    <div id="parent">
      <div id="child"><span>There should be lots of cats in the background, covering the entire page, excluding the yellow background of this text, but <em>including the area outside the blue box</em>. One of the cats should start exactly inside the top left corner of the blue box (the HTML box).</span></div>
     </div>
  </div>

 </body>
</html>