I stopped using OO CSS frameworks (long explanation here: http://minid.net/2019/04/07/the-css-utilitarian-methodology/) because these few reasons:

- They add countless size for using few things. - You end up re-writing lots of rules to adapt your own end. - Updating from vX to vX can be painful process - You add a learning curve to your process

I work now on Functional CSS and using this methodology ensures I can go back any project and work faster and better and also delivering top notch performance.

You can check the framework I've built to generate the atomic rules https://github.com/meerita/utilcss