QR-code using flex-box

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

I dont think i do anything 'great' here. One thing I learned is definitely flexbox and how to use it the way I wanted it to be.

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

I want to create the .container width using relative measurement. I was trying to use the same resolution as the content inside with added padding. I tried fit-content but it seems that the width doesn't fit according to the content inside. So I ended up using absolute measurement

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

I'd like to know how to adjust size according to the content inside. And I want to know which part of my code could be improved according to industry standard.