chromium/third_party/blink/web_tests/compositing/overflow/composited-nested-sticky-left-expected.html

<style>
body {
  margin: 0;
}

.group {
  position: relative;
  width: 350px;
  height: 200px;
}

.scroller {
  will-change: transform;

  overflow: auto;
  width: 350px;
  height: 180px;
  outline: 2px solid black;
}

.container {
  width: 700px;
  height: 180px;
}

.outerBox {
  position: relative;
  background-color: green;
  width: 200px;
  height: 180px;
}

.innerBox {
  position: relative;
  background-color: red;
  width: 100px;
  height: 180px;
}
</style>

<script>
window.addEventListener('load', function() {
  for (const scroller of document.querySelectorAll('.scroller')) {
    scroller.scrollLeft = 200;
  }
});
</script>

<div class="group">
  <div class="scroller">
    <div class="container">
      <div class="outerBox" style="left: 250px;">
        <div class="innerBox" style="left: 0;"></div>
      </div>
    </div>
  </div>
</div>

<div class="group">
  <div class="scroller">
    <div class="container">
      <div class="outerBox" style="left: 250px;">
        <div class="innerBox" style="left: 50px;"></div>
      </div>
    </div>
  </div>
</div>

<div class="group">
  <div class="scroller">
    <div class="container">
      <div class="outerBox" style="left: 250px;">
        <div class="innerBox" style="left: 100px;"></div>
      </div>
    </div>
  </div>
</div>