File: anchored-child-transition-with-selection.html

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<!DOCTYPE html>
<title>CSS Anchor Positioning Test: Transition on anchored element child with ::selection</title>
<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  #container {
    position: absolute;
    right: anchor(right);
    --i: 1px;
  }
  #content {
    scale: 0;
    transition: scale 1000s step-end;
  }
  #content.show { scale: 1; }
  ::selection { color: var(--a); }
  #container.foo {}
</style>
<div id="container">
  <div id="content">FAIL</div>
</div>
<script>
  test(() => {
    content.offsetTop;
    content.classList.toggle("show");
    container.classList.toggle("foo");
    assert_equals(getComputedStyle(content).scale, "0");
  }, "Should transition scale property on anchored child");
</script>