Auto-expand CSS3 rules with browser prefixs

[andrewdavey]

e.g.

border-radius: 5px;

becomes

border-radius: 5px;
-moz-border-radius: 5px;

etc

[NewMediaRoc]

This can be easily achieved with LESS or SCSS mix-ins. http://css-tricks.com/snippets/css/useful-css3-less-mixins/