Thanks for the feedback. A lot of people seem to be getting hung up on the sass thing. I'm all for sass, I don't think using 15 CSS classes for margins is the best way to handle this. I just wanted to use a watered down illustration for those who don't yet understand sass. Ideally, this should al be abstracted into variables/mixins/extends.

My main point though, is that I'd like to see us working together to decide what the best approach is, then apply that across the board. I don't see any reason for us to continue doing things slightly differently.

Whether you use CSS, SASS, LESS or any other preprocessor, we should be writing reusable CSS. At the moment, that is not happening across the web.