responsive qr code

Hi!

Congrats with your first challenge, that's cool =)

I can give a few tips.

• You can style image directly, without wrapping it in the div. Also there is no need to set height for it as images adjusts their proportions.
• Every page should contain main tag. You can use it instead div wrapper.
• I recommend you to use min-height instead height for body tag. That way it could stretch in cases if content would be bigger than screen size.
• It is good idea to make the width of the container responsive too. You can do it with max-width property.
• For font sizes it's better to use rem instead of pixels. It's a special values which depends on users font settings.

So, hope that could helps =) Good luck, keep doing cool stuff =)