Responsive QR Code Component by using Flexbox (Mobile-1st approach)

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

I am proud of successfully completing my first challenge and deploying it on GitHub Pages.

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

I was a bit stuck at avoiding minimizing the use of flexbox. But understood that after all it is to be used for minimizing efforts. Also learnt that HTML semantics cannot be overlooked.

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

1. I am facing a minor issue of flexbox "overflow" while inspecting the webpage on Firefox browser. Please help me know if it's fix is mandatory in real world projects.

2. I would be glad to know if there is any scope of refinement or optimization required in my code.