QR flexbox solution

What are you most proud of, and what would you do differently next time?

Maybe next time I could improve the semantics and find a way to shorten the code so that it is much simpler to read.

What challenges did you encounter, and how did you overcome them?

What was most difficult for me was centering the main container in the body, it took me a long time to solve it

What specific areas of your project would you like help with?

I would like to improve making the decision of which display to use, when and how. The rest is not that difficult, it is simply trying to be faster and more efficient.