On p25, para 2 of Safari Visual Effects Guide. It says: .... "However unlike transitions, animations do not change property values at the end of the animation" Yes, indeed. The properties are all reset to their beginning values. (at the end of the animation) You can not intervene. The properties are reset. period. I presume just in case count > 1? Grrr! This is so brain dead. It means one can NOT compose piecewise animation steps for a node. It means all animations become looped animations. This is an insane limitation. Who defined this behavior? How can you go about piecing together count=1 animations? Answer, you cannot. Grrr. Sigh. IMHO a count=1 animation SHOULD NOT RESET at the end, but leave the properties at their final values. Can we get the safari spec fixed?
Animation fill-modes are on our to-do list for CSS animations. BTW, you can chain animations by using the webkitAnimationEnd event.
*** This bug has been marked as a duplicate of bug 26869 ***