custom-highlight-universal-inheritance-001.tentative.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-highlight-api/custom-highlight-universal-inheritance-001.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="UTF-8">

<title>Custom Highlight: ::highlight(*) on :root reaches a named highlight on a descendant</title>

<link rel="author" href="mailto:seokho@chromium.org">

<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/9091">

<link rel="match" href="custom-highlight-universal-inheritance-001.tentative-ref.html">

<meta name="assert" value="A named highlight with no rule on its ancestors inherits from the ancestor's ::highlight(*) style.">

<style>

  :root::highlight(*) {

    background-color: pink;

  div::highlight(foo) {

    color: green;

</style>

<body>

<div>One two three…</div>

<script>

  let div = document.querySelector("div");

  let r = new Range();

  r.setStart(div.firstChild, 0);

  r.setEnd(div.firstChild, 8);

  CSS.highlights.set("foo", new Highlight(r));

</script>