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<!DOCTYPE html>
<html lang=en>
<meta charset="utf-8">
<title>Selectors Level 4: focus-within with shadow DOM</title>
<link rel="author" title="Keyong Li" href="mailto:kli79@bloomberg.net">
<link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#focus-within-pseudo">
<link rel="match" href="focus-within-shadow-001-ref.html">
<meta name="flags" content="interact dom">
<meta name="assert" content="Test that :focus-within applies to a focused element inside the shadow DOM.">
<body>
<p>Test passes if there is a green rectangle below.</p>
<div id="shadow-host"><strong>Skip this test, shadow DOM is not supported.</strong></div>
<template id="shadow-template">
<style>
/* Suppress things that cannot be reproduced in the reference file */
:focus {
outline: none;
}
div:focus-within {
border: solid 15px green;
}
</style>
<div id="focusme" class="reftest-wait" onfocus="this.classList.toggle('reftest-wait');" tabindex="1"></div>
</template>
<script>
var shadow = document.getElementById('shadow-host').createShadowRoot();
var template = document.getElementById('shadow-template');
var instance = document.importNode(template.content, true);
shadow.appendChild(instance);
window.setTimeout(function() {
var focusme = shadow.getElementById('focusme');
focusme.focus();
}, 0);
</script>
</body>
</html>
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