35 lines
966 B
HTML
35 lines
966 B
HTML
<!DOCTYPE html>
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<title>CSS Anchor Positioning Test: Dynamically change position via position-try-fallbacks property</title>
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<link rel="help" href="https://drafts.csswg.org/css-anchor-1/#fallback">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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body { margin: 0; }
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@position-try --fallback1 {
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left: anchor(--a1 right);
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}
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#anchor {
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anchor-name: --a1;
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width: 100px;
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height: 100px;
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}
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#anchored {
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position: absolute;
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left: 999999px; /* Force fallback */
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width: 100px;
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height: 100px;
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}
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</style>
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<div id="anchor"></div>
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<div id="anchored"></div>
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<script>
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test(() => {
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assert_equals(anchored.offsetLeft, 999999);
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}, "Initial static left position is 0");
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test(() => {
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anchored.style.positionTryFallbacks = "--fallback1";
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assert_equals(anchored.offsetLeft, 100);
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}, "Left position set to right edge of anchor with @position-try");
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</script>
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