47 lines
1.4 KiB
HTML
47 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<meta charset="UTF-8">
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<title>CSS Positioned Layout Test: an element with 'position: sticky' creates a stacking context</title>
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<link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
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<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
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<link rel="help" href="https://www.w3.org/TR/css-position-3/#sticky-pos">
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<meta name="assert" content="This test checks that an element with 'position: sticky' creates a stacking context. In this test, the first 2 divs have the same 'auto' z-index value but since div#sticky is last in document tree order, then it must overlap div#overlapped-red. The final div#overlap-bottom-half-of-sticky exists to make sure that the div#sticky is squeezed, is 'sandwiched' between the other 2.">
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<style>
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div
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{
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height: 100px;
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width: 100px;
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}
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div#overlapped-red
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{
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background-color: red;
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position: absolute;
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}
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div#sticky
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{
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background: linear-gradient(to bottom, green 51%, red 49%);
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position: sticky;
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}
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div#overlap-bottom-half-of-sticky
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{
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background-color: green;
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bottom: 50px;
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height: 50px;
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position: relative;
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}
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</style>
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<p>Test passes if there is a filled green square and <strong>no red</strong>.
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<div id="overlapped-red"></div>
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<div id="sticky"></div>
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<div id="overlap-bottom-half-of-sticky"></div>
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