File: host-not-001.html

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<!doctype html>
<meta charset="utf-8">
<title>:host combined with :not</title>
<link rel="help" href="https://drafts.csswg.org/selectors/#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 id=host>
</div>
<script>
  host.attachShadow({mode: "open"}).innerHTML = `
    <style>
      :host {
        width: 100px;
        height: 100px;
        background-color: green;
      }
      div:host {
        background-color: red;
      }
      :not(div):host {
        background-color: red;
      }
      :host:not(div) {
        background-color: red;
      }
      :host:is(div) {
        background-color: red;
      }
      :is(div):host {
        background-color: red;
      }
      :host:not(:hover) {
        background-color: red;
      }
      :host:not(:defined) {
        background-color: red;
      }
    </style>
  `;

</script>