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https://github.com/ManchildProductions/UXP-Fixed.git
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Matt A. Tobin
33 lines
1.2 KiB
HTML
33 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>CSS Test: transform: perspective(0)</title>
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<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org">
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<link rel="author" title="Mozilla" href="https://www.mozilla.org">
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<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#funcdef-perspective">
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<meta name="assert" content="perspective(0) should behave like identity transform function.">
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<link rel="match" href="reference/green.html">
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<style>
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#cover-me, #test {
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width: 100px;
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height: 100px;
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}
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#cover-me {
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background: red;
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position: relative;
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margin-bottom: -100px;
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}
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#test {
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background: green;
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/* This should be an identity transform, since perspective(0) must be
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* treated as perspective(infinity), and consequently translateZ()
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* doesn't have any effect, so that it covers up #cover-me.
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* If perspective(0) is invalid, #test would not create a stacking
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* context, and #cover-me would be placed on top of #test showing red.
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* If perspective(0) is handled as perspective(epsilon), #test would
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* be invisible. */
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transform: perspective(0) translateZ(50px);
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}
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</style>
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<p>Pass if there is NO red below:</p>
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<div id="cover-me"></div><div id="test"></div>
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