A qr-code page designed using plain css

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

I am proud that I was able to do this without any frameworks as I have been struggling a bit with plain css. I would like to use frameworks like bootstrap or tailwind css next time.

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

I could not center the qr code elements to the center of the page. I managed to center it horizontally using flexbox but failed to do so vertically.

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

Centering of components on the page for it to also be responsive on mobile screens