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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/CSS2/positioning/absolute-non-replaced-max-height-010.xht
parentInitial commit. (diff)
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firefox-upstream.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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: Max-height on absolutely positioned, non-replaced elements, 'margin-top' and 'margin-bottom' set to '0'</title>
+ <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
+ <link rel="reviewer" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-08-31 -->
+ <link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height" />
+ <link rel="match" href="absolute-non-replaced-height-003-ref.xht" />
+
+ <meta name="assert" content="When 'top' and 'height' are 'auto' and 'bottom' is not 'auto', then the height is based on the content (and such height can be constrained by a max-height declaration) and then set 'auto' values for 'margin-top' and 'margin-bottom' to 0, and solve for 'top' " />
+ <style type="text/css">
+ #div1
+ {
+ border: solid black;
+ height: 3in;
+ position: relative;
+ width: 3in;
+ }
+ div div
+ {
+ background: blue;
+ bottom: 1in;
+ height: 2in;
+ margin-bottom: auto;
+ margin-top: auto;
+ max-height: 1in;
+ position: absolute;
+ top: auto;
+ width: 100%;
+ }
+
+ /*
+
+ auto (to solve) : top
+ +
+ auto (to solve): margin-top
+ +
+ 0 : border-top-width
+ +
+ 0 : padding-top
+ +
+ 2in : height (will be constrained to use 1in by max-height)
+ +
+ 0 : padding-bottom
+ +
+ 0 : border-bottom-width
+ +
+ auto (to solve): margin-bottom
+ +
+ 1in : bottom
+ =============
+ 3in : height of containing block
+
+
+ "
+ 'top' is 'auto', 'height' and 'bottom' are not 'auto',
+ then set 'auto' values for 'margin-top' and 'margin-bottom' to 0,
+ and solve for 'top'
+ "
+
+ so this brings:
+
+ auto (to solve) : top
+ +
+ 0 (set): margin-top
+ +
+ 0 : border-top-width
+ +
+ 0 : padding-top
+ +
+ 1in (constrained) : height
+ +
+ 0 : padding-bottom
+ +
+ 0 : border-bottom-width
+ +
+ 0 (set): margin-bottom
+ +
+ 1in : bottom
+ =============
+ 3in : height of containing block
+
+ So, top must use 1in in order to balance the equation
+
+ */
+ </style>
+ </head>
+ <body>
+ <p>Test passes if a blue rectangle is <strong>vertically centered</strong> in an hollow black square.</p>
+ <div id="div1">
+ <div></div>
+ </div>
+ </body>
+</html>