margin-collapse-019.xht (2072B)
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 - elements that collapse margins have to effect on positions of other elements that also have margins that are collapsing</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/" /> <!-- 2012-08-15 --> 7 <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins" /> 8 <link rel="match" href="margin-collapse-002-ref.xht" /> 9 10 <meta name="flags" content="ahem image" /> 11 <meta name="assert" content="Positions of elements that have been collapsed through (empty elements) have no effect on positions of other elements whose margins are being collapsed." /> 12 <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" /> 13 <style type="text/css"> 14 div 15 { 16 font: 20px/1em Ahem; 17 width: 5em; 18 } 19 div div 20 { 21 height: 1em; 22 } 23 #div1 24 { 25 background: url('support/margin-collapse-2em-space.png') left -1em; 26 border-top: 1em solid green; 27 } 28 #div2 29 { 30 background: red; 31 } 32 #div3 33 { 34 background: red; 35 height: 0; 36 margin-top: 2em; 37 margin-bottom: 2em; 38 } 39 #div4 40 { 41 background: green; 42 margin-top: 2em; 43 } 44 </style> 45 </head> 46 <body> 47 <p>Test passes if there is <strong>no red</strong>.</p> 48 <div id="div1"> 49 <div id="div2"> 50 <div id="div3"></div> 51 <div id="div4"></div> 52 </div> 53 </div> 54 </body> 55 </html>