If there is one thing a language needs to qualify as a programming language, it’s variables; they’re incredibly useful, save us a bunch of work and typing, and improve coding all-round. This is exactly what CSS didn’t have. Pre-processors like Sass and Less used them, but vanilla CSS never had variables. Until now. They’ve been on the horizon for a while, but only recently have variables started to be implemented in CSS, let’s take a look at how they work. Browser support ... Currently CSS...