问题
Lets say this is our sprite

(please ignore the black forms) Is there a way to repeat the gray -on the left- tiled image so it looks like a repeated background?

回答1:
Nope, as far as I know, this is not possible, not even in CSS3.
You will need to separate the images.
There is the background-clip
property but that controls the clipping of the background image in relation to its container, which is something else.
来源:https://stackoverflow.com/questions/7796210/background-repeat-tiled-bgimage-inside-an-sprite-image