custom-highlight-painting-below-selection-transparency.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-highlight-api/painting/custom-highlight-painting-below-selection-transparency.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="UTF-8">

<title>CSS Highlight API Test: </title>

<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">

<link rel="match" href="custom-highlight-painting-below-selection-transparency-ref.html">

<meta name="assert"

  value="Highlight overlay is painted below selection overlay. If selection uses transparency, colors are combined.">

<style>

  ::highlight(foo) {

    background: yellow;

</style>

<body><span id="highlighted">This should be yellow, <span id="selected">this should mix with the

      selection,</span></span> this should have no background.

  <script>

    let highlightRange = new Range();

    highlightRange.setStart(document.body.firstChild, 0);

    highlightRange.setEnd(document.body.firstChild, 2);

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

    getSelection().setBaseAndExtent(selected, 0, selected, 1);

  </script>