How to style html generated from markdown?

I’m not very experienced with front-end work. I started with the tutorial in the docs and used Bulma CSS for my styling. However when I display anything generated from markdown the generated html does not have any classes and just looks like text. How am I supposed to style generated elements?

Looking at the themes and how they do styling they all seem to be using sass and building their css from the ground up, which I have no experience with and would prefer to not to do. I just want the generated html to use bulma classes.

Okay I’m stupid I just need to use class “content”