How to make the contour rotate around its axis?

Question

css

There is this code:
Everything works correctly on the X axis, but on the Y axis the behavior is not for some reason, as if the rotation is not around the Y axis, but around the Z axis
https://codepen.io/anon/pen /JevRpY

Answer 1

I don’t know how it should have been, I did it like this:
https://codepen.io/xmoonlight/pen/Rqyozd