match: true) {
    #inner {
      color: green;
    }
  }
</style>
<div id="container">
  <div id="outer">
    <div id="inner"></div>
  </div>
</div>
<script>
  setup(() => assert_implements_container_queries());

  test(() => {
    assert_equals(getComputedStyle(inner).color, "rgb(255, 0, 0)");
    assert_equals(getComputedStyle(inner).getPropertyValue("--match"), "");
    assert_equals(getComputedStyle(outer).getPropertyValue("--match"), "");
    assert_equals(getComputedStyle(container).getPropertyValue(