testing/web-platform/tests/css/CSS2/margin-padding-clear/margin-collapse-004.xht

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
   2 <html xmlns="http://www.w3.org/1999/xhtml">
   3     <head>
   4         <title>CSS Test: Margin collapsing - negative margins deducted from zero</title>
   5         <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
   6         <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-08-14 -->
   7         <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins" />
   8                 <link rel="match" href="margin-collapse-004-ref.xht" />
   9
  10         <meta name="flags" content="" />
  11         <meta name="assert" content="Negative margins are deducted from zero if no positive margins are adjoining." />
  12         <style type="text/css">
  13             div div
  14             {
  15                 height: 20px;
  16             }
  17             #div1
  18             {
  19                 background: blue;
  20                 margin-bottom: 0;
  21             }
  22             #div2
  23             {
  24                 background: orange;
  25                 margin-top: -40px;
  26             }
  27         </style>
  28     </head>
  29     <body>
  30         <p>Test passes if the orange bar is above the blue bar.</p>
  31         <div>
  32             <div id="div1"></div>
  33             <div id="div2"></div>
  34         </div>
  35     </body>
  36 </html>