<!DOCTYPE html>
<title>Multicol under vertical-rl scrolling container</title>
<p>Passes if there are two green squares</p>
<div id="scroller" style="width: 200px; height: 200px; overflow: scroll; border: 1px solid black">
  <div style="width: 580px; height: 500px; position: relative">
    <div style="position: absolute; right: 0">
      <div style="width: 80px; height: 80px; background: green"></div>
      <div style="height: 20px"></div>
      <div style="width: 80px; height: 80px; background: green"></div>
    </div>
  </div>
</div>
<script>
// Scroll all the way to the right.
scroller.scrollLeft = 800;
</script>