third_party/WebKit/LayoutTests/css2.1/20110323/dynamic-top-change-005a.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 abspos grandparent (variant: block parent)</title>
   5   <link rel="author" title="Boris Zbarsky" href="mailto:bzbarsky@mit.edu">
   6   <link rel="author" title="L. David Baron" href="http://dbaron.org/">
   7   <link rel="reviewer" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
   8   <link rel="help" href="http://www.w3.org/TR/CSS21/cascade.html#value-def-inherit">
   9   <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#position-props">
  10   <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#propdef-position">
  11   <meta name="flags" content="dom">
  12   <meta name="assert" content="The position of a positioned element which inherits its 'top' value from its relatively positioned parent changes when the parent's 'top' value is changed.">
  13   <style type="text/css">
  14     .testDiv { position: relative; width: 100px; height: 100px; }
  15     #green { top: 100px; background: green; }
  16     #red { top: inherit; background: red; display: block; }
  17     #parent { position: relative; }
  18     body > p { position: absolute; font-size: medium; }
  19     #grandparent { position: absolute; top: 0; }
  20     body { font-size: 0; line-height: 0; position: relative; }
  21   </style>
  22   <script type="text/javascript">
  23     window.onload = function() {
  24       document.body.offsetWidth;
  25       document.getElementById("parent").style.top = "50px";
  26     }
  27   </script>
  28  </head>
  29  <body>
  30    <p>There should be no red.</p>
  31    <div id="grandparent">
  32      <div id="parent">
  33        <span id="red" class="testDiv"></span>
  34      </div>
  35    </div>
  36    <div id="green" class="testDiv"></div>
  37  </body>
  38 </html>