Is it possible to use custom HTML and CSS in bubble?

I already have my front-end made. Can I import it


I’m looking for this feature too. I’m trying to use something like this on my website:

Any idea how to do use this code in

The best way is probably to create a plugin and build an element. There you can add your JS and CSS


Could you explain this a bit more?
Or give reference
How to integrate ready to use front-end website (HTML, CSS, JS) and use bubble for back-end?
I cheked this manual but i can’t figure out how to do it