It’s best to hand out such comments sparingly 
@LostKobrakai I think has done an excellent explanation here that really gets at the heart of the goal. A good example today would be Bulma. Bulma is a very popular javascript free CSS framework. If you want to use bulma in a phoenix project it’s super easy: just delete phoenix.css and add the core bulma files and you’re done.
Notably: app.css will still contain a phx-disconnected definition, why? Because this is still a class you need to have a definition for regardless of whether you’re using the phoenix styles or not.
