CDN Matter.js
<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/matter.min.js"></script>
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<script src="https://cdn.jsdelivr.net/npm/[email protected]/build/matter.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/matter-js/0.18.0/matter.js"</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/impress.js/0.5.3/impress.min.js"></script>
matter.js, good