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+<!doctype html>
+<title>CSS Scoping Module Level 1 - Disabled stylesheet dynamically</title>
+<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
+<link rel="help" href="https://drafts.csswg.org/css-scoping/#selectors-data-model">
+<link rel="match" href="reference/green-box.html"/>
+<p>Test passes if you see a single 100px by 100px green box below.</p>
+<div id="host"></div>
+<script>
+ let root = host.attachShadow({ mode: 'open' });
+ root.innerHTML = `
+ <style>
+ div { background: green; width: 100px; height: 100px; }
+ </style>
+ <style>
+ div { background: red; }
+ </style>
+ <div></div>
+ `;
+ document.body.offsetTop;
+ root.styleSheets[1].disabled = true;
+</script>