QR Code Challenge Solution Using flex box

Congratulations on completing this challenge. You have done a great job already.

A feedback from my end in regards to your question and overall is that, always try and use semantic HTML. I see you have used mostly used <DIV>. For the main container, you should use <main>

For the Attribute, you could put it inside <FOOTER>

And lastly, H1, H2, H3 should be used in order. We should prefer using H1 first and then H2, H3 and so forth.

Again, keep up the great work, keep consistent and you will see results. Cheeers!

You can set the container in the middle of the screen whatever user changes it when you add these properties to it in CSS:

.container {
  display: absolute;
  top:50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

the new feature is transform, it has many lovely properties you can discover, I personally love it. Hope it's useful