css/css-scrollbars/transparent-on-root.html

<!doctype html>
<meta charset="utf-8">
<title>CSS Test: non-opaque scrollbar-color should work on the root</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-scrollbars-1/#scrollbar-color-properties">
<link rel="match" href="transparent-on-root-ref.html">
<style>
:root {
  overflow: scroll;
  scrollbar-color: transparent transparent;
  background-color: black;
}
</style>