Jakob said: No, you need to edit the Sass code. On the other hand, CSS is a subset of Sass, so you can just write CSS in the Sass file. So if a maintainer of a sheet decided to start working on it with Sass, it would essentially increase the difficulty for other to contribute as people would need to learn Sass? If that's the case, I completely understand why there aren't too many sheets made with Sass. I mean, if someone where to make a bunch of sheets with Sass and then abandon the projects, people could technically just continue work on the CSS, but all that work would kinda be invalidated if someone where to again contribute trough the Sass framework, right?