See https://myspace-nu.github.io/fancy-ui/ for live demo.
For convenience you can use a CDN:
In your <head> add the following:
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@myspace-nu/fancy-ui@latest/dist/fancy-ui.min.css">
<script src="https://cdn.jsdelivr.net/npm/@myspace-nu/fancy-ui@latest/dist/fancy-ui.min.js"></script>