57 lines
2.6 KiB
HTML
57 lines
2.6 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: Absolutely positioned non-replaced elements when both 'margin-left' and 'margin-right' are set to 'auto' and direction is left-to-right</title>
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<link rel="author" title="Microsoft" href="http://www.microsoft.com/">
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<link rel="help" href="http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width">
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<meta name="flags" content="ahem">
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<meta name="assert" content="When direction is 'ltr' and 'left', 'width' and 'right' are not 'auto', solve for 'margin-right' and 'margin-left' to equal values. If this would make 'margin-left' and 'margin-right' negative, then set 'margin-left' to zero and solve for 'margin-right'.">
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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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direction: ltr;
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height: 2in;
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position: relative;
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width: 2in;
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}
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div div
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{
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background: red;
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color: blue;
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font: 1in/1em Ahem;
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left: 1in;
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margin-left: auto;
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margin-right: auto;
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position: absolute;
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right: 1in;
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width: 1in;
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}
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/*
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left : 1in
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+ margin-left : solve (auto)
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+ border-left-width : 0
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+ padding-left : 0
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+ width : 1in
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+ padding-right : 0
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+ border-right-width : 0
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+ margin-right : solve (auto)
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+ right : 1in
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====================================
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width of containing block : 2in
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So, margin-left and margin-right would be each -0.5in at this point.
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"...unless this would make them (the two margins) negative in which case when direction of the containing block is 'ltr' ('rtl'), set 'margin-left' ('margin-right') to zero and solve for 'margin-right' ('margin-left')."
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So, under such extra constraint, 'margin-left' must become 0 and 'margin-right' must become -1in.
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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 the blue box fills the upper-right corner of the black box and there is no red visible on the page.</p>
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<div id="div1">
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<div>X</div>
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</div>
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</body>
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</html> |