CSS Preprocessor

CSS Preprocessor is a parser, compiler, and assembler which extends the CSS language to allow nested rules and attributes, variables / @mixin, functions, and especially, strong validation of your source code so you know that it will work the first time you use it in your browser. The library is written in C++ allowing any other C++ project to work with CSS without having to rewrite their own parser. The library supports 4 output levels from ultra compressed CSS code to beautified CSS code. The preprocessor features are based on other existing CSS processors such as SASS and {less}, although the syntax is mainly based on the SASS syntax (i.e. variables use the $ character as their introducer). See the Wiki and csspp documentation for additional information.