First attempt at REST Countries API Challenge using React

This is my first attempt at this challenge.

I think my main aim in the next attempt is to separate out the components even more.

I've deviated from using the v2 API and used the newer version of the REST Countries API instead.

I think there are a few things to improve which I'll add in my future attempts:

1. Better error handling when I get a bad request from the API not related to my query.
2. Using localstorage to store the dark mode preference.
3. Using media queries to load preferences?

Anyway, let me know what you think and what I could do to improve the app!