Sass is the most mature, stable, and powerful professional grade CSS extension language in the world.
Why SASS?
CSS COMPATIBLE
Sass is completely compatible with all versions of CSS. We take this compatibility seriously so that you can seamlessly use any available CSS libraries.
FEATURE RICH
Sass boasts more features and abilities than any other CSS extension language out there. The Sass Core Team has worked endlessly to not only keep up but stay ahead.
INDUSTRY APPROVED
Over and over again, the industry is choosing Sass as the premier CSS extension language.
Read more about SASS.
http://sass-lang.com
http://sass-lang.com/guide
http://en.wikipedia.org/wiki/Sass_(stylesheet_language)
http://alistapart.com/article/why-sass
XHTMLTEAM.COM convert your PSD design into a responsive layout with SASS.
Order PSD to SASS.
https://www.xhtmlteam.com/order-now.php