QR Code using Flexbox for positioning

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

I tried to use semantic markup where possible to try and keep it simple to follow.

I'm most proud of the positioning as that is what I spent most of my time on, and in the end I decided to go with flexbox.

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

Positioning was the part that I spent the most time on. I broke the positioning down into smaller parts, first getting the main QR-code cantered and then aligned.

Finally getting the footer to sit below the QR-code.

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

Was Flexbox the best solution for my positioning conundrum?

I did try Grid briefly but I couldn't quite get it to sit right on the page.