BEM is a system of naming classes that encourages the good practice of writing modular code. It can really help bring structure and meaning to the way we name things and it's something I use consistently in my day to day client work. It can be used with or without Sass but Sass and BEM are a great combination. In this video you'll learn what BEM is, what it stands for, how to leverage the Sass ampersand with BEM and some BEM best practices.