position-sticky-scrolled-remove-sibling-002.html

<!DOCTYPE html>
<meta charset="utf-8">
<link rel="author" title="Ting-Yu Lin" href="mailto:[email protected]">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-position/#sticky-pos">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1612561">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="This test verifies that there is no vertical scrollbar after removing the sibling that overflows the scroll container">

<style>
#scroll {
  width: 100px;
  height: 100px;
  overflow: auto;
  background: green;
}
.sticky {
  position: sticky;
  width: 50px;
  height: 100px;
  top: 0;
  margin-bottom: -100px;
}
#sibling {
  width: 50px;
  height: 500px;
  background: red;
}
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div id="scroll">
  <div class="sticky"></div>
  <div id="sibling"></div>
</div>

<script>
window.onload = () => {
  document.getElementById("scroll").scrollTop = 200;
  document.getElementById("sibling").remove();
};
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-position/sticky/position-sticky-scrolled-remove-sibling-002.html