File: custom-highlight-painting-staticrange-002.html

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<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: StaticRange across contain boundary is painted</title>
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">
<link rel="match" href="custom-highlight-painting-001-ref.html">
<meta name="assert" value="A StaticRange crossing a contain boundary should be painted">
<style>
  ::highlight(example-highlight) {
    background-color: yellow;
    color: blue;
  }
  #contained {
    contain: paint;
  }
</style>
<body><span>One <span id="contained">two </span>three…</span>
<script>
  let h = new Highlight();
  h.add(new StaticRange({startContainer: document.body.firstChild.childNodes[0], startOffset: 0, endContainer: document.body.firstChild.childNodes[1], endOffset: 1}));
  CSS.highlights.set("example-highlight", h);
</script>