To learn just enough CSS for your MVP: Understand the box model Understand flex box basics Understand padding and margin Experiment with laying out simple e

To learn just enough CSS for your MVP: Understand the box model Understand flex box basics Understand padding and margin Experiment with laying out simple elements on a single HTML file (where you can iterate more quickly), then when you have what you want, make those same changes in your React app If you spend one hour on each of these, you may be surprised by how capable you’ve become. The rest, as others have said, you will pick up naturally as you work on your project.