third_party/WebKit/LayoutTests/css2.1/20110323/block-non-replaced-width-008.htm

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
   2 <html>
   3
   4  <head>
   5
   6   <title>CSS Test: Solving 'width: auto' of a block-level non-replaced element in normal flow with one other property set to an 'auto' value</title>
   7
   8   <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
   9   <link rel="help" title="10.3.3 Block-level, non-replaced elements in normal flow" href="http://www.w3.org/TR/CSS21/visudet.html#blockwidth">
  10   <meta content="" name="flags">
  11   <meta content="If 'width' is set to 'auto', any other 'auto' values become '0' and the determination of 'width' proceeds from the following equality: 'margin-left' + 'border-left-width' + 'padding-left' + 'width' + 'padding-right' + 'border-right-width' + 'margin-right' = width of containing block" name="assert">
  12
  13   <style type="text/css">
  14   div {height: 200px;}
  15
  16   div#containing-block
  17   {
  18   border-right: red solid 200px;
  19   padding-right: 200px;
  20   width: 0px;
  21   }
  22
  23   div#child
  24   {
  25   border-right: green solid 200px;
  26   margin-right: -400px;
  27   }
  28
  29   /*
  30   Calculation of used width for div#child:
  31
  32     margin-left             :    0px (or auto)
  33   + border-left-width       :    0px
  34   + padding-left            :    0px
  35   + width                   :    auto
  36   + padding-right           :    0px
  37   + border-right-width      :  200px
  38   + margin-right            : -400px
  39   ====================================
  40   width of containing block :    0px
  41
  42   Therefore 'width: auto' must be resolved as 'width: 200px'.
  43   Therefore div#child's green border-right should overlap perfectly
  44   div#containing-block's red border-right.
  45   */
  46   </style>
  47
  48  </head>
  49
  50  <body>
  51
  52   <p>Test passes if there is a filled green square below and <strong>no red</strong>.</p>
  53
  54   <div id="containing-block">
  55     <div id="child"></div>
  56   </div>
  57
  58  </body>
  59 </html>