LayoutTests/fast/selectors/has-style-sharing.html

<style>
*:has(> .parent-border) {
  border: 2px red solid;
}
</style>
<div>
  <p>This div will have nothing</p>
</div>
<div>
  <ul class="parent-border">
    <li>This list will have a border because of :has.
  </ul>
</div>