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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /css/css-anchor-position/anchor-position-flip-sibling-index.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>CSS Anchor Positioning Test: flip anchor function with sibling-index()</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#typedef-position-try-fallbacks-try-tactic">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body { margin: 0; }
#anchor {
anchor-name: --a;
width: 100px;
height: 100px;
}
#abs {
position-anchor: --a;
position-try-fallbacks: flip-block;
position: absolute;
bottom: anchor(calc(20% * sibling-index()));
width: 100px;
height: 100px;
background: teal;
}
</style>
<div>
<div id="anchor"></div>
<div id="abs"></div>
</div>
<script>
test(() => {
assert_equals(getComputedStyle(abs).top, "60px", "100% - (20% multiplied by 2 (sibling-index())) of 100px")
}, "Percentage based top anchor() position with sibling-index() flipped to bottom");
</script>