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47 lines
1.8 KiB
HTML
47 lines
1.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<title>CSS Test: transparency of margin area and background-color</title>
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<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
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<link rel="help" href="http://www.w3.org/TR/CSS21/box.html#mpb-examples" title="8.2 Example of margins, padding, and borders">
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<link rel="help" href="http://www.w3.org/TR/CSS21/colors.html#background" title="14.2 The background">
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<link rel="match" href="reference/ref-filled-green-100px-square.htm">
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<meta content="" name="flags">
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<meta content="The margin area of an element is always transparent. The background-color of an element never paints its own margin area. The background-color of an element only paints its own border area (if any), its own padding area (if any) and its own content area (if any). Therefore the background-color of the content area (and of the padding area, if any, and of the border area, if any) of a parent element shines through the margin area of its child. In this test, div#parent is painted green and is 100px wide by 98px tall; its sole child has 98px vertical margins and 100px horizontal margins which are transparent and through which we can see the background color of its parent." name="assert">
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<style type="text/css">
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div#parent
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{
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background-color: green;
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border-top: green solid 2px;
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/*
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This border-top's sole purpose is to prevent margin
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collapsing between itself and the p's margin-bottom
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*/
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height: 98px;
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width: 100px;
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}
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div#child
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{
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background-color: red;
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margin: 49px 50px;
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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 there is a filled green square and <strong>no red</strong>.</p>
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<div id="parent">
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<div id="child"></div>
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</div>
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</body>
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</html> |