You can. It's up to the membership to approve.
I would not call them fines. I would call them monetary penalties.
Having such language in your CC&Rs would be beneficial if you imposed monetary penalties and were challenged in court as there was a big issue in Virginia a few years back about an HOA taken to court over fines and the court ruled that because the language wasn't in the CC&Rs, the HOA exceeded their authority by imposing monetary penalties. The court also acknowledged that "fines" could only be imposed by government entities (hence the terminology suggestion).
See:
Subject: VA Associations, Do you still have the authority to use monetary penalties for violations? Thread on this forum. Note: I'm positive that not all of the links work (as it's been almost 10 years since that post)