Frontend Mentor - QR code component solution

**What did you find difficult while building the project? Most tricky part was to place image corrent with padding and marings, because I have no access to design files. But overall it was quite easy challange. In my opinion of course :D

**Which areas of your code are you unsure of? Names of HTML elements and CSS classes. I don't feel very confident in naming those elements. Where I can search for best practices? Maybe you can link me some websites trust worthy.