Submitted
There's not so much I can say, but I like this one, it's pretty simple yet challenging.
By the way, I have a question: I notice the qrcode is "always" in center, then I tried doing it with the attributions too and "they" move a little when you change the page's size, how do I make them stay in a fixed position? I used "position: fixed;" and "static;" but both didn't seem to work.