Load the widget script once, anywhere in your page's <head>.
<script type="module" src="https://files.invisual.app/pkg/symbolic-maps/latest/index.js"></script>
Place the element where the map should appear, then give it a width and a height in your own CSS — it fills whatever box you put it in.
<symbolic-map map-id=""></symbolic-map>
The widget is a native custom element, so it works in plain HTML and in any framework.