css/css-variables/variable-recalc-with-initial.html

<!DOCTYPE html>
<head>
  <title>Style recalculation picks up “initial” variable declaration</title>
  <link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">
  <link rel="help" href="https://crbug.com/1508841">
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <style>
    .a {
      --color: red;
    }
    .b {
      --color: initial;
    }
    .c {
      color: var(--color, green);
    }
  </style>
</head>
<body>
  <div class="a">
    <div class="b">
      <div class="c" id="target">Test passes if this text is green.</div>
    </div>
  </div>
  <script>
    test(() => {
      let target = document.getElementById('target');
      target.offsetTop;
      document.body.style.pointerEvents = 'none';
      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
    });
  </script>
</body>