When design systems are the source of truth and subscribers have easy access to code, it's important that code is well-tested. Lindsey shares how we unit test our Sass and how you can too.

Kasey shows the difference between Sass variables and new CSS variables. Now we have more options to simplify our code and condense classes.

Ethan walks you through HSL color notation, then gets funky with color functions.

Rob will have you saying “Hello” to the right solution and “Bye" to `transitionend` headaches.

Philip shares just how powerful & can be to create simple, clean, and robust Sass.