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<!doctype html>
<meta charset="utf-8">
<title>CSSStyleSheet.insertRule() on a constructable stylesheet uses the right base uri, even if replace/Sync() hasn't been called yet</title>
<link rel="author" href="https://mozilla.org" title="Mozilla">
<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
<link rel="help" href="https://drafts.csswg.org/cssom/">
<link rel="match" href="CSSStyleSheet-constructable-insertRule-base-uri-ref.html">
<script>
const sheet = new CSSStyleSheet();
sheet.insertRule(`
:root {
background-image: url("../../images/green.png");
}
`);
document.adoptedStyleSheets.push(sheet);
</script>