I dont’t like Bootstrap framework but like Semantic-UI.
Remove Bootstrap as a Bower dependency and then add Semantic-UI as a Bower dependency. You’ll also have to change any Bootstrap specific markup in the template files. There’s probably a decent amount of steps in-between.
See #3 from https://roots.io/modifying-bootstrap-in-sage/
For anyone that wants to replace Bootstrap with a different framework in Sage:
Fork Sage and get to work Working forks with different front-end frameworks will help us implement them when the generator comes out.
Thank you!!! You are the perfect solution to my question.