;
    width: 100px;
    height: 100px;
    z-index: -1;
  }
</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<div id="reference-overlapped-red"></div>
<div style="display: grid; grid-template-columns: 100px; grid-template-rows: 100px;">
  <div style="background: green; aspect-ratio: 1/1; justify-self: stretch;"></div>
</div>
