Responsive QR Code with Flexbox

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

I am proud of the responsiveness, but I would like to take a mobile first approach next project.

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

I had an issue with footer sizing and the qr "card" at the smallest mobile device screen sizes. I overcame them with media queries and size adjustments (font and element).

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

Properly organizing my code.