desktop and mobile QR code using Flexbox

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

I completed this challenge a while ago but I was proud of implementing my own scalable QR code. When improving my solution I am looking forward to seeing how I have improved.

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

I had issues getting the sizing pixel-perfect and lacked coding best practices.

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

Specific HTML and CSS best practices are always a big help.