<!DOCTYPE html>
<style>
div::before {
position: relative;
overflow: scroll;
display: block;
width: 100px;
height: 100px;
content: "."
}
:nth-child(13)::-webkit-scrollbar {
color: pink;
}
</style>
<script>
if (window.testRunner)
testRunner.dumpAsText();
</script>
<p>This test should not trigger any ASSERTs.</p>
<div></div>