NFT Preview Card Component built with HTML5 and Flexbox (CSS3)

Another challenge cleared! I had fun with this one, mainly because it involved overlaying multiple elements on top of one another and displaying them accordingly on hover. This is something that I haven't tried for quite some time, so there were interesting lessons that were learned during the process. As always, if anyone could give me any suggestions on cleaner/shorter code to achieve the same goal or better front-end practices, I would be extremely grateful.

P.S: I'm sure there's a much more efficient way to do the overlay part, so please let me know if you have another method. Thanks :D