QR code component

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

Made an effort to condense code as much as possible

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

I managed to center the "main" element horizontally on the page but struggled to do so vertically. I tried the same approach as for horizontal centre alignment, i.e. specify give an exact height then set margins to auto, thinking it would work the same way but it didn't. When I set the vertical margin to auto it just removed all the vertical margins.

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

Couldn't find anything online regarding the vertical centring. Ended up having to define exact vertical margins to get it looking centred.

Any ideas, please share