Simple QR Code Project using Flex

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

This is my first challenge after learning a little bit of html and css. I had a little bit of trouble centering the content. But after searching for a while I finally got it. I hope I can get better advice on what techniques to use.

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

I had trouble centering the existing container element. After searching on Google, I finally found a clue by utilizing flexbox combined with the use of the height property set to 100vh to center the element vertically and horizontally.

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

I am still having trouble determining the correct element tag when creating a web element. I still do not fully understand the concept of semantic html and accessibility. In addition to these problems, I am also still having trouble centering elements with the right and most efficient techniques. Feel free to comment and give an advice to me. Thank you so much.