third_party/WebKit/LayoutTests/css2.1/20110323/dynamic-top-change-001.htm

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
   2 <html>
   3  <head>
   4   <title>CSS Test: Inheriting 'top' changes from relpos grandparent</title>
   5   <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu">
   6   <link rel="reviewer" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
   7   <link rel="help" href="http://www.w3.org/TR/CSS21/cascade.html#value-def-inherit">
   8   <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#position-props">
   9   <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#propdef-position">
  10   <meta name="flags" content="dom">
  11   <meta name="assert" content="The position of a positioned element which inherits its 'top' value from its relatively positioned grandparent changes when the grandparent's 'top' value is changed.">
  12   <style type="text/css">
  13     .testDiv { position: absolute; width: 100px; height: 100px; }
  14     #green { top: 4em; background: green; }
  15     #red { top: inherit; background: red; }
  16     #parent { top: inherit; position: relative; }
  17     #grandparent { position: relative; }
  18   </style>
  19   <script type="text/javascript">
  20     window.onload = function() {
  21       document.body.offsetWidth;
  22       document.getElementById("grandparent").style.top = "2em";
  23     }
  24   </script>
  25  </head>
  26  <body>
  27    <p>There should be no red.</p>
  28    <div id="grandparent">
  29      <div id="parent">
  30        <div id="red" class="testDiv"></div>
  31      </div>
  32      <div id="green" class="testDiv"></div>
  33    </div>
  34  </body>
  35 </html>