background-size with background-position doesn't scale the position?

Question

I\'ve a sprite of 62 images of 91 * 91px, which makes the whole thing 91 * 5642 px. They\'re displayed in sort of a dynamic grid that grows and shrinks depending on user/pointer

Answer 1

it's actually pretty simple, just use percentage position.

background-position: 0 3.28%;

http://jsfiddle.net/g4RQx/18/