responsive QR page done using css flexbox

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

I'm proud of how good it ended up looking. I don't think I'd do anything differently.

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

The biggest problem I encountered was the section container not being in the middle vertically. It turns out that you have to set a height for the body for there to be more space than the elements you place make.

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

I think I'm mostly curious if it could be written better, especially CSS.