rotating menu cube wrapper code css

[foxxyy1110]

Please help with an issue. I want to create a rotating menu code like on https: //www.minipack-torre.it/it/macchine-confezionatrici ( the second one, not the main one on top of the page, the one that is flipping when it is clickable).
I know a little css but I am lost in that entire code.
If you can give me a hint on what part of the code should I extract that will mean a lot to me.

Thanks