In this chapter, you'll learn how to use the react-bootstrap package. This package provides mobile-first React components by leveraging the Bootstrap CSS framework. It's not the only option available for doing mobile-first React, but it's a good choice, and it brings together two of the most popular technologies on the web.
I'll start with the motivation for adopting a mobile-first design strategy. Then you'll spend the rest of this chapter implementing a few react-bootstrap components.