foboooos/Practica-REACT ? reverse-engineered prompt

Build me a simple React app for practicing the basics.

I want a clean starter project that runs well in the browser and is easy to extend, with a main screen and a few reusable components so I can keep adding exercises or small features later. Please make it feel polished enough to open and use right away, with sensible layout, responsive styling, and a nice default home view.

If anything is unclear, use the usual current React and Vite best practices, and look up current docs online if you need to. Keep the code straightforward and easy to understand, since this is for learning and editing by hand later.