dslmeinte/concrete — comment on commit c2bb73fb315b6ff661de8aadd11154c97c99a8ba
File:  line 0
By dslmeinte:

Seemed to me these styles are quite universally usable and gives a good starting point. Also, there's a couple classes in there which are quite specific to Concrete editing (like .ct_editor) and without which it's hard(er) to get the editor to appear to work at all.