relpos-calcs-002.xht (1945B)
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: Relative Positioning - auto bottom = -top</title> 5 <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact"/> 6 <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-09-25 --> 7 <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#relative-positioning" /> 8 <link rel="match" href="relpos-calcs-001-ref.xht" /> 9 10 <meta name="assert" content="For a relatively positioned element, if 'bottom' 11 is 'auto', its used value is minus the value of 'top'." /> 12 <style type="text/css"> 13 div { 14 height: 120px; 15 width: 120px; 16 } 17 .container { 18 margin-top: -60px; 19 } 20 .outer { 21 background: red; 22 position: relative; 23 top: 50%; 24 /* 25 div.outer's used top value is 60px 26 div.outer's used bottom value is -60px 27 div.outer's computed top value is 50% 28 div.outer's computed bottom value is auto and not -50%! 29 */ 30 31 } 32 .inner { 33 background: green; 34 position: relative; 35 bottom: inherit; /* using inheritance to test computed vs. used */ 36 /* What is inherited is the computed bottom value of 37 its containing block, which is auto! 38 */ 39 } 40 .control { 41 background: red; 42 margin-top: -60px; 43 } 44 </style> 45 </head> 46 <body> 47 <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> 48 <div class="container"> 49 <div class="outer"> 50 <div class="inner"></div> 51 </div> 52 </div> 53 <div class="control"></div> 54 </body> 55 </html>