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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+ <head>
+ <title>CSS Test: Relative Positioning - auto bottom = -top</title>
+ <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact"/>
+ <link rel="reviewer" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-09-25 -->
+ <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#relative-positioning" />
+ <link rel="match" href="relpos-calcs-001-ref.xht" />
+
+ <meta name="assert" content="For a relatively positioned element, if 'bottom'
+ is 'auto', its used value is minus the value of 'top'." />
+ <style type="text/css">
+ div {
+ height: 120px;
+ width: 120px;
+ }
+ .container {
+ margin-top: -60px;
+ }
+ .outer {
+ background: red;
+ position: relative;
+ top: 50%;
+ /*
+ div.outer's used top value is 60px
+ div.outer's used bottom value is -60px
+ div.outer's computed top value is 50%
+ div.outer's computed bottom value is auto and not -50%!
+ */
+
+ }
+ .inner {
+ background: green;
+ position: relative;
+ bottom: inherit; /* using inheritance to test computed vs. used */
+ /* What is inherited is the computed bottom value of
+ its containing block, which is auto!
+ */
+ }
+ .control {
+ background: red;
+ margin-top: -60px;
+ }
+ </style>
+ </head>
+ <body>
+ <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+ <div class="container">
+ <div class="outer">
+ <div class="inner"></div>
+ </div>
+ </div>
+ <div class="control"></div>
+ </body>
+</html> \ No newline at end of file