Typer.js help on webflow

Hi everyone, I am trying to integrate typer.js in webflow.

I have followed this tutorial I found:
http://webflow-typer-demo.webflow.io/

I am doing exactly what the tutorial says and for some reason I cant get the typer.js to work.
Is it outdated? Or is their a better tutorial somewhere to do this ?

Thanks everyone

This is the text im trying to integrate it to

https://preview.webflow.com/preview/smarkt?preview=5af5101ef73f2df8cbdb60d1e936ab34