QR code component

Hey, Great job with this solution you should be proud, A few things I noticed,

• Missing a <meta> description tag for SEO purposes,
• Setting a height and width attribute to your <img> will increase performance to reduce layout shifts and improve CLS, It reserves the space on the page for the image,
• It is best practice to have a <main> tag inside your body highlighting the main section.
• ‍Using max-width: 100% or min-width: 100% is way more responsive then just width:100%, check out this article also from the same Frontend mentor dev responsive-meaning, she goes into more detail.
• You should avoid using px as it is an absolute unit and not a responsive unit like rem or em, You should look at this article from a Frontend mentor dev, Why font-size must NEVER be in pixels.
• Another great resource for px to rem converter.
• You should apply a full modern reset to make things easier as you build, check out this site for a Full modern reset
• Using a naming convention like BEM, Using proper naming will prepare you for the changes in design of the website.
• It is best practice to use margin-inline: auto; to center left and right then than just margin: auto;, You can center the height by using this code snippet

  min-height: 100svh;
  display: flex;
  justify-content: center;
  flex-direction: column;

I hope you found some of this information helpful, You should give the articles a good read and I look forward to seeing some more from you, Happy coding! 💻