File: font-relative-calc-dynamic.html

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<!doctype html>
<title>CSS Container Queries Test: font-relative calc - dynamic</title>
<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#size-container">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
  body { font-size: 10px; }
  body.larger { font-size: 20px; }
  #container {
    container-type: inline-size;
    width: 100px;
    color: red;
  }
  #intermediate {
    font-size: 8px;
  }
  @container (width: calc(1em + 80px)) {
    #target { color: green; }
  }
</style>
<div id="container">
  <div id=intermediate>
    <div id="target"></div>
  </div>
</div>
<script>
  setup(() => assert_implements_size_container_queries());

  test(() => {
    assert_equals(getComputedStyle(target).color, 'rgb(255, 0, 0)');
    document.body.className = 'larger';
    assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
  }, 'font-relative calc() is responsive to container font-size changes');
</script>