I am relatively new to programming, therefore I hope that the question is not absolutely stupid.
I got a problem concerning my rails app.
I try to use bootstrap.
I just want to past my resolution as a reference. I have also encountered this issue today. if you also using emacs with scss mode it may be helpful. as default when you save scss file emacs will auto-compile these scss file and create a responding .css file. then you just need to delete these .css file. or put below code to .emacs as permanent fix
(setq scss-compile-at-save nil) ;; disable the auto-compilation