Sass is the most mature, stable, and powerful professional grade CSS extension language in the world (via Sass-lang.com)
Back in May, I (Josh) had the honor of speaking at WordCamp Miami about Sass.
I highlighted why Sass will improve your WordPress theme development workflow and how developers who are curious about Sass and developing modern front-end practices can use it on their next project.
The goal of the talk was to introduce CSS preprocessors, and Sass in particular and give some examples as to how Sass can be useful for WordPress theme developers. See all the slides here.
