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081dcc2a67
--HG-- extra : commitid : g9V0KzHbx6
50 lines
1.7 KiB
HTML
50 lines
1.7 KiB
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>CSS transforms: Creating containing block for fixed positioned elements</title>
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<link rel="author" title="L. David Baron" href="http://dbaron.org/">
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<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
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<link rel="help" href="https://drafts.csswg.org/css-transforms-1/#transform-rendering">
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<link rel="help" href="https://drafts.csswg.org/css-transforms-1/#transform-property">
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<link rel="match" href="containing-block-dynamic-1-ref.html">
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<meta name="assert" content="For elements whose layout is governed by the CSS box model, any value other than none for the transform results in the creation of both a stacking context and a containing block. The object acts as a containing block for fixed positioned descendants.">
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<meta name="assert" content="The object acts as a containing block for fixed positioned descendants."
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<meta name="flags" content="dom">
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<style>
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html, body { margin: 0; padding: 0 }
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#changetransform {
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position: absolute;
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top: 100px;
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left: 100px;
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}
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#abscovered {
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position: absolute;
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top: 50px;
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left: 50px;
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background: red;
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height: 100px;
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width: 100px;
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}
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#fixedmoves {
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position: fixed;
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top: 50px;
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left: 50px;
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background: green;
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height: 100px;
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width: 100px;
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}
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</style>
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<body>
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<div id="changetransform">
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<div id="abscovered"></div>
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<div id="fixedmoves"></div>
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</div>
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<script>
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var changetransform = document.getElementById("changetransform");
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var fixedmoves = document.getElementById("fixedmoves");
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var causeFlush = fixedmoves.offsetTop;
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changetransform.style.transform = "translateX(0px)";
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</script>
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</body>
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