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75 lines
2.5 KiB
HTML
75 lines
2.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>CSS Test: Absolutely positioned, non-replaced elements, 'margin-top' set to 'auto'</title>
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<style type="text/css">
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@page { font: italic 8pt sans-serif; color: gray;
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margin: 7%;
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counter-increment: page;
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@top-left { content: "CSS 2.1 Conformance Test Suite"; }
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@top-right { content: "Test absolute-non-replaced-height-004"; }
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@bottom-right { content: counter(page); }
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}
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</style>
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<link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
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<link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-08-31 -->
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<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-height" />
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<link rel="match" href="reference/absolute-non-replaced-height-003-ref.xht" />
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<meta name="flags" content="" />
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<meta name="assert" content="When 'top', 'bottom', 'height' and 'margin-bottom' of an absolutely positioned, non-replaced element are all not 'auto' while its 'margin-top' is 'auto', then 'margin-top' becomes the remainder of the height of its containing block." />
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<style type="text/css">
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#div1
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{
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border: solid black;
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height: 3in;
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position: relative;
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width: 3in;
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}
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div div
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{
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background: blue;
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bottom: 0.5in;
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height: 1in;
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margin-top: auto;
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margin-bottom: 0.5in;
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position: absolute;
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top: 0.5in;
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width: 100%;
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}
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/*
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0.5in : top
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+
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auto (solve): margin-top
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+
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0 : border-top-width
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+
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0 : padding-top
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+
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1in: height
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+
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0 : padding-bottom
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+
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0 : border-bottom-width
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+
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0.5in : margin-bottom
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+
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0.5in : bottom
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=============
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3.0in : height of containing block
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So, margin-top must use 0.5in so that the equation gets balanced.
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*/
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</style>
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</head>
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<body>
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<p>Test passes if a blue rectangle is <strong>vertically centered</strong> in an hollow black square.</p>
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<div id="div1">
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<div></div>
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</div>
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</body>
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</html> |