size-change-during-transition-crash.html

<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>Container Queries - Size change during transitions crash</title>
<script src="/common/reftest-wait.js"></script>
<link rel="help" href="https://crbug.com/1451359">
<style>
  #outer {
    container-type: inline-size;
    width: 100px;
  }
  #inner {
    background-color: black;
    transition: background-color 60s;
  }
  #inner.target {
    background-color: white;
  }
  @container (width > 200px) {
    #inner.target  {
      background-color: lime;
    }
  }
</style>
<p>Pass if no crash.</p>
<div id="outer">
  <div id="inner">Look at my background</div>
</div>
<script>
  inner.offsetTop;
  inner.className = "target";
  requestAnimationFrame(() => {
    requestAnimationFrame(() => {
      outer.style.width = "300px";
      takeScreenshot();
    });
  });
</script>

chromium/third_party/blink/web_tests/external/wpt/css/css-conditional/container-queries/crashtests/size-change-during-transition-crash.html