multicol-under-vertical-rl-scroll-ref.html

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<!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>