Responsive page w/ grid and media queries, and single function script

My first lvl 2 project on Frontend Mentor! I have been studying Javascript for the last month, and after some little projects here and there I decided to try my skill in these projects. It wasn't easy at first, there were some new challenges, such as fetching data from a JSON file, and also a parameter problem on my function, basically if I used the parameter in dot notation to go deep in an object it would bug out, so I had to use bracket notation. Yes, I know, pretty novice stuff, but I always used dot notation, so I totally forgot the bracket one. The js coding part seems clean to me, I tried to use less code as possible, I could've solved the javascript portion like 10x faster if I wanted to write a lot of code, but that's not how it's supposed to go, so I forced myself to write as l little code as possible, and I'm pretty happy with the result! I know my code is probably still on the bad side, but I'm sure that the more I code, the better I'll become, and I cannot wait to start a new project! Any feedback is always appreciated, have a nice day!