Chatbot UI Design Using Wix

I’ve added a chatbot to my website using the custom code feature in settings, im trying to change the UI of it as i cant change it from its orginal state in voiceflow and i’ve written a css file to make it look nicer, however im struggling to figure out how to implement it into Wix. Both code runs fine on Replit however i cant host it either. Can anyone please help me.???

Wix Studio is mostly intended for developing code on its platform rather than something entirely custom.

However you can use custom elements: About Custom Elements