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<head>
<meta charset="utf-8">
<title>CSS Masking Module Level 1: parsing mask-composite with invalid values</title>
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-composite">
<meta name="assert" content="mask-composite supports only the grammar '<compositing-operator>#'.">
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script src="../../../css/support/parsing-testcommon.js"></script>
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