This file gives you a functioning app. But, as you can tell, the App isn't modular at all - there is only 1 component!
Task: Break down this app into components and make them work together to achieve exactly the same result.
Remember that React components should be modular, composable (can be assembled in various ways to achieve the desired result on the page), and reusable.
This exercise will help you to practice passing data into components, creating Stateless Functional Components, adding state to components, updating state, and creating Controlled Components.