Responsive Qr code page using CSS and HTML

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

While working on these challenge i have learned flexbox, positions and HTML Semantic element .The area i need to more focus and learn in CSS and HTML are:

1)transform 2)translate 3)pseudo-elements 4)HTML Semantic where i need to use it 5)float 6)grid

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

Some challenges encountered in CSS flexbox. But i am able to fix it.

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

Currently i am all good with it. I think grid area i have to focus more