<!doctype html>
<meta charset="utf-8">
<title>:host and :is (basic) </title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:[email protected]">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<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>
:is(:host) .nested {
width: 100px;
height: 100px;
background-color: green;
}
</style>
<div class="nested"></div>
`;
</script>