There is no denying that CSS was the first great revolution in the front end web world. Without it, think of what the web would look like; most likely, it would have remained limited to its academic origins, where style and design play a much less significant role than the multifaceted, visual web we have today.
In recent years, CSS has undergone a revolution of its very own, as preprocessors such as Sass, LESS, Stylus and others change our methodologies in creating our stylesheets. These tools allow for greater efficiency both in terms of creating the CSS and the final product that’s produced. I was slow to jump on the CSS-preprocessor bandwagon, but I am fully on board these days.