Going through site after senior dev asked front end dev to go through it and tweak it for design and better responsiveness(he and I are back end oriented and have no design skillz).

Things are breaking visually on almost all devices.

Client sends an email saying it suddenly looks terrible on mobile and wants to know what happened. I let him know we were actively working on things and it should be good in a few minutes.

Looking over CSS...there are "!important" tags EVERYWHERE, media queries are in the wrong order and have "!important" attached to almost everything so the largest screen size settings win.

Why do I even bother?