NFT card

Hello guys and thanks for watching and sharing your comments and suggestion with me! There are 2 main things i'm not happy about this project: 1-Again, and again, and again.. i'm not able to get a real, round, borders on my projects.. i always use border-radius, and for the images it always works, but when i use it on the general layout (divs, sections, etc) i never get a completly round borders.. anybody knows what i do wrong? 2- In the Main design, when you hover on the pic, the opacity is "bright", kind white, mine is darker.. i tryed to change the background color of the section.image and div.eye (check the code if you want) with a white colo, but nothing changed.. Btway, thank you for any suggestion you can give me to code better!