LESS, the dynamic stylesheet language is a new paradigm in CSS. Here we’re proudly going to start a series of articles that will focus on LESS, the dynamic language that surely put your CSS on top. Actually LESS extends CSS with dynamic behavior such as variables, mixins, operations and functions within your CSS. It’s extremely powerful and can dramatically speed up your development. There is a little bit of a learning curve to it, but once you wrap your head around it, you won’t type CSS again without using LESS. LESS runs on both the server-side or client-side.