QR-code component using CSS flexbox

Hello! Congratulations for finishing your challenge! Here's some feedback:

• The attribution should be moved at the end of the html just before the closing </body> tag, and change it to <footer>. Atributions and legal disclaimers are usually part of the footer.
• Try to always link the attribution to your profile. This is a good practice for the future, so potential employers and/or clients may have a way to contact you.
• Change the <section> tag for <main>.
• use a <h1> tag instead of <h4>.
• You have an html issue in the image source, change \ for /.

Now on the css part.

• You were going great when you applied the box sizing as border box, just add a box-sizing: inherit, check: https://www.paulirish.com/2012/box-sizing-border-box-ftw/.
• Also to the html tag add a font-size: 62.5% this is to make 1rem = 10px.
• I would recommend against using static units like px, cm and such, because screen sizes vary continously, if you leave them static, it may cause problems with some screens.

I hope it helps.

Happy coding!

Have a great day!