<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Test Reference</title>
<link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu">
<link rel="author" title="Mozilla Corporation" href="http://mozilla.com/">
<style>
  body > span { border: 3px solid blue }
  #one { border-right: none; }
  #three { border-left: none; }
</style>
<body>
  <span id="one">
    One
  </span>
  <div>Two</div>
  <span id="three">
    Three
    Four
  </span>
</body>
