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296fa2512b
- Update CSS tests to revision e05bfd5e30ed662c2f8a353577003f8eed230180. - Update web-platform-tests to revision a052787dd5c069a340031011196b73affbd68cd9.
48 lines
No EOL
1.5 KiB
HTML
48 lines
No EOL
1.5 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"><head><meta charset="utf-8" />
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<title>CSS transforms: Creating containing block for fixed positioned elements</title>
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<link href="https://dbaron.org/" rel="author" title="L. David Baron" />
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<link href="http://www.mozilla.org/" rel="author" title="Mozilla" />
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<link href="https://drafts.csswg.org/css-transforms-1/#perspective-property" rel="help" />
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<link href="reference/containing-block-dynamic-1-ref.xht" rel="match" />
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<meta content="It also establishes a containing block (somewhat similar to position: relative), just like the transform property does." name="assert" />
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<meta content="dom" name="flags" />
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<style>
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html, body { margin: 0; padding: 0 }
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#changeperspective {
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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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</head><body>
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<div id="changeperspective">
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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 changeperspective = document.getElementById("changeperspective");
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var fixedmoves = document.getElementById("fixedmoves");
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var causeFlush = fixedmoves.offsetTop;
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changeperspective.style.perspective = "1000px";
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</script>
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</body></html> |