Bootstrap 4 snippets and custom bricks

I’ve been trying to find a good resource of custom bricks, or failing that a way to insert bootstrap snippets into blocs. I can see how to add the html Code via the code widget, but how do you add the css?

Any ideas?

Hey, I had this issue as well . You can attach the css file in page settings just upload and you are good!

Thanks! seems to work, now I just have to work on how to edit the contents/code