Editing CSS? Build environment?

[MJR42]

When I try UI edits I just ssh to the pi and use nano to edit the files directly.

NPM and Gulp are Node.js, so fine on either platform.

The problem I think I see is that in 7.0.0, the image doesn't have a css folder with frames.css anymore. Everything is contained in map files, so I think that means I'd need to have something that can at least create a replacement file that I could insert by transferring the file.

Correct me if I'm wrong?