testing/web-platform/tests/html/rendering/non-replaced-elements/the-fieldset-and-legend-elements/sticky-content-ref.html


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<!DOCTYPE html>
<body>
<style>
body {
  margin: 0;
}

.fieldset div {
  height:1000px;
}

span {
  background: lime;
  display: block;
  height: 40px;
  position: absolute;
  top: 4px;
  left: 0px;
  width: 40px;
}

.fieldset {
  border: none;
  height: 400px;
  margin: 0;
  overflow: scroll;
  padding: 0;
}
</style>
<div class="fieldset"><div><span></span></div></div>
<script>
document.querySelector('.fieldset').scrollTop = 1000;
</script>
</body>