I've tested in 1.21.1 - 1.20.1 - 1.14 - 1.13 Maybe it might work on future or older versions, I don't know but you can try.
Fix the inverted "gravel" and "Netherrack" words in the ressource pack's description.
I've tested in 1.21.1 - 1.20.1 - 1.14 - 1.13 Maybe it might work on future or older versions, I don't know but you can try.
