css/css-backgrounds/background-clip-content-box.html

<!DOCTYPE html>
<html>
  <head>

    <title>CSS Background and Borders Test:background-clip_content-box</title>
    <link rel="author" title="anping" href="mailto:zhuanping123@163.com" />
        <link rel="help" href="http://www.w3.org/TR/css3-background/#the-background-clip" />
       <meta name="match" content="reference/reference.html" />
       <meta name="assert" content="Test passes if the background color is limited to the content only and border is blue dotted without red">

    <style>
      div{
          position:absolute;
         }

       #test{
        background-clip: content-box;
        border: 5px dotted blue;
        height: 100px;
        left: 10px;
        padding: 10px;
        top: 10px;
        width: 100px;
        background-color:red;
       }
    </style>
   <head/>
 <body>
  <p>
   "Test passes if the background color is limited to the content only and border is blue dotted without red."
  </p>
  <div id="container">
   <div id="test"></div>
  </div>
 </body>

</html>