third_party/WebKit/LayoutTests/css2.1/20110323/absolute-non-replaced-height-003.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: Absolutely positioned, non-replaced elements, vertical centering</title>
   5         <link rel="author" title="Microsoft" href="http://www.microsoft.com/">
   6         <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height">
   7         <meta name="flags" content="">
   8         <meta name="assert" content="An absolutely positioned non-replaced element's padding box (which is the area painted by background-color of the element) will be vertically centered within its containing block only if both 'margin-top' and 'margin-bottom' have equal values and if 'top' and 'bottom' have equal values. An absolutely positioned non-replaced element's margin box will be vertically centered within its containing block only if 'top' and 'bottom' have equal values.">
   9         <style type="text/css">
  10             #div1
  11             {
  12                 border: solid black;
  13                 height: 3in;
  14                 position: relative;
  15                 width: 3in;
  16             }
  17             div div
  18             {
  19                 background: blue;
  20                 bottom: 0.5in;
  21                 height: 1in;
  22                 margin-bottom: auto;
  23                 margin-top: auto;
  24                 position: absolute;
  25                 top: 0.5in;
  26                 width: 100%;
  27             }
  28         </style>
  29     </head>
  30     <body>
  31         <p>Test passes if the blue box is vertically centered in the black box.</p>
  32         <div id="div1">
  33             <div></div>
  34         </div>
  35     </body>
  36 </html>