<body>
<div class="container"></div>
<script src="https://cdn.jsdelivr.net/npm/fireworks-js@2.x/dist/index.umd.js"></script>
<script type="module" >
import { Fireworks } from 'https://cdn.jsdelivr.net/npm/fireworks-js@2.x/dist/index.umd.js';
const container = document.querySelector('.container')
const fireworks = new Fireworks(container, { /* options */ })
fireworks.start()
</script>
</body>
.container{
width:300px;
height:450px;
}