QR Card Component using CSS

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

1. Able to figure out you cannot vertically center block element inside a block parent. Instead you use grid for the parent and apply place-items: center; to center the child.
2. Learnt shadow attributes.
3. Learnt css reset.
4. Learnt BEM naming convention.
5. Learnt logical properties.

Would try to organize the css attributes better inside each block.