testing/web-platform/tests/css/css-pseudo/highlight-cascade-008-ref.html


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<!DOCTYPE html>
<title>Custom property values from the root element</title>
<script src="support/selections.js"></script>
<style>
  div::selection {
    background-color: green;
    text-decoration-line: underline;
    text-decoration-style: line;
    text-decoration-thickness: 1px;
    text-decoration-color: yellow;
  }
  span::selection {
    background-color: blue;
  }
</style>
<div style="width: 300px">PASS if background-color is green when selected, <span>except this which is blue</span>, and underline is yellow.<script>
  selectNodeContents(document.querySelector("div"));
</script>