Thanks, Jake - I understand the use case. Yes, pure CSS is useful only if you know in advance the dimensions of the transform(s) that you want to perform.
In many cases, these are relative units - for example, to slide-in a panel you would start at, say -100% or +100% X and translate to 0. And so pure CSS is useful in many every-day web page animations.
If you need to rotate or move to some arbitrary position, then you cannot (easily) do it with pure CSS. Surely, a different rule for each degree is extreme!
It's not clear, though, what the requirement here is. I don't know if he wants to rotate by 60 degrees, or by any arbitrary number of degrees 0 to 60 to be determined at run-time.