Responsive QR Code image for the text frontendmentor

What challenges did you encounter, and how did you overcome them?

Well at first i used qrcode generator script, then i found out that the image generated was not responding according to the device, and i found out that i could use image provided by frontendmentor and it was easy to make page responsive.

What specific areas of your project would you like help with?

I was having trouble to make the page responsive, and i think about not knowing much of css. So I want to improve in css flexbox, grid, margin, and dimension like px, %, em etc.