Learning to code is a journey, and the first milestone for designers is often learning HTML and CSS. A great style guide can really propel a designer on their journey to becoming a key contributor. The same attributes that make a style guides great for designing in the browser also help with CSS maintainability, scalability, performance, and can even make it enjoyable to work with CSS again. This talk delves into what makes a great style guide for designers and everyone else, with some tips on the process of building style guides.