Watch me code this in 27 minutes (you can also speed it up if you feel I'm typing/ speaking too slow). Doesn't work in Firefox/ Edge due to lack of support for
calc() computing most values other than lengths. Update: now works in Firefox too, though it's laggy. Featured in my CSS-Tricks article Simplifying CSS Cubes with Custom Properties. If you like this demo in particular and my demos in general, please consider one of the following:
Title is a reference to Delain's Mother Machine.