css/selectors/featureless-004.html

<!doctype html>
<meta charset="utf-8">
<title>Logical combo pseudos can match if their argument is allowed to</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#featureless">
<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<div class=host>
    <template shadowrootmode="open">
      <style>
        div {
          width: 100px;
          height: 20px;
        }
        .red { background-color: red; }
        .green { background-color: green; }

        :is(:host, aside) .t1 {
          background-color: green;
        }
        :not(:not(:host)) .t2 {
          background-color: green;
        }


        :not(aside) .t3 {
          background-color: red;
        }
        :not(.foo:host) .t4 {
          background-color: red;
        }
        :not(:host > .foo) .t5 {
          background-color: red;
        }
      </style>
      <div class="red t1"></div>
      <div class="red t2"></div>
      <div class="green t3"></div>
      <div class="green t4"></div>
      <div class="green t5"></div>
      <slot></slot>
    </template>
    <section></section>
</div>