About Clay is a CSS preprocessor like LESS and Sass, but implemented as an embedded domain specific language (EDSL) in Haskell. This means that all CSS selectors and style rules are first class Haskell functions, which makes reuse and composability easy. Clay doesn't really use any clever Haskell tricks which makes it easy to work with, even without a lot of Haskell experience. {-# LANGUAGE Overlo