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host-nesting-003.html
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<!doctype html>
<metacharset="utf-8">
<title>:host and nesting (combined with something else)</title>
<linkrel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<linkrel="author" title="Mozilla" href="https://mozilla.org">
<linkrel="help" href="https://drafts.csswg.org/css-nesting/#nest-selector">
<linkrel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<p>Test passes if there is a filled green square.</p>
<divid="host"></div>
<script>
host.attachShadow({mode: "open"}).innerHTML=`
<style>
.nested {
width: 100px;
height: 100px;
background-color: green;
}
:host(#not-host), #host {
.nested {
background-color: red;
}
}
</style>
<div class="nested"></div>
`;
</script>
