<!DOCTYPE HTML>
<title>CSS Overflow Test: disabling ::scroll-marker-group removes column scroll-markers</title>
<link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker-group%E2%91%A0">
<link rel="match" href="scroll-marker-group-style-remove-ref.html">
<style>
#scroller {
  overflow: hidden;
  scroll-marker-group: after;
  columns: 1;
  column-fill: auto;
  height: 100px;
  width: 100px;
}
#scroller::column::scroll-marker {
  content: ' ';
  border-radius: 50%;
  background: blue;
  width: 50px;
  height: 50px;
}
.scroll-marker-group::scroll-marker-group {
  border: 3px solid black;
  display: flex;
  height: 50px;
  width: 100px;
}
.item {
  height: 100px;
  width: 100px;
}
</style>
<div id="scroller" class="scroll-marker-group">
  <div class="item">1</div>
  <div class="item">2</div>
</div>
<script>
  document.body.offsetTop;
  scroller.className = "";
</script>