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<!DOCTYPE html>

<title>CSS Scoping: Shadow host is featureless</title>

<link rel="help" href="https://drafts.csswg.org/css-shadow/#host-element-in-tree">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<div id="host">

<template shadowrootmode="open">

<style>

div {

--x:FAIL;

}

</style>

</template>

</div>

<script>

test(() => {

assert_equals(getComputedStyle(host).getPropertyValue('--x'), '');

});

</script>