compat/webkit-scrollbar-parse.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>::-webkit-scrollbar must parse for web-compat</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#compat">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="s"></style>
<script>
'use strict';

test(() => {
  const sheet = document.getElementById("s").sheet;
  sheet.insertRule("#x::-webkit-scrollbar { display: none; }");
}, "insertRule() with ::-webkit-scrollbar must not throw");
</script>