CSS, along with HTML and javascript, plays a pivotal role in the creation of an app's user interface. Still, many React developers never attain mastery in this essential stylesheet language. In this course—an installment in a larger series on CSS for React developers—instructor Eric Greene covers the basics of using CSS and PostCSS to create elegant React apps. Eric shows how to use a custom React scripts package, configure PostCSS—a tool that powers more than 200 diverse javascript plugins—and make a few changes to it, and work with CSSNext and PostCSS. Plus, learn how to add additional PostCSS plugins and test your CSS in Microsoft web browsers.