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- Update CSS tests to revision e05bfd5e30ed662c2f8a353577003f8eed230180. - Update web-platform-tests to revision a052787dd5c069a340031011196b73affbd68cd9.
26 lines
No EOL
1.2 KiB
HTML
26 lines
No EOL
1.2 KiB
HTML
<!DOCTYPE html>
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<html><head><meta charset="utf-8">
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<title>CSS will-change: 'will-change: transform' creates a 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-will-change-1/#will-change" rel="help">
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<link href="http://www.w3.org/TR/css3-transforms/#transform-property" rel="help">
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<link href="reference/green-square-100-by-100-offset-ref.htm" rel="match">
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<meta content="If any non-initial value of a property would cause the element to generate a containing block for fixed-position elements, specifying that property in will-change must cause the element to generate a containing block for fixed-position elements." name="assert">
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<style>
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html, body { margin: 0; padding: 0; }
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div { width: 100px; height: 100px }
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#wc { will-change: transform; margin: 100px 0 0 100px; background: red }
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.child { top: 0; left: 0; width: 50px; background: green }
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#fixpos { position: fixed }
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#abspos { position: absolute; left: 50px }
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</style>
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</head><body>
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<div id="wc">
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<div id="fixpos" class="child">
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</div>
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<div id="abspos" class="child">
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</div>
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</div>
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</body></html> |