QR code component using flexbox

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

I shall first set the size of the object and then try to center it.

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

I have learnt to center an object by using width and flexbox. I was previously doing that using margin. But that was not responsive.

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

In mobile when I turn screen to landscape mode, footer gets in the middle. Please help me getting it at the bottom of the page.