cubic-bezier function to specify your own points.
See cubic-bezier
for a description of the parameters for this function.
See "Visual Effects Timing Functions"
for additional information about timing functions.
This property applies between keyframes, not over the entire animation.
For example, for an ease-in-out timing function, an animation eases
in at the start of the keyframe and eases out at the end of the keyframe.
A -webkit-animation-timing-function defined within a keyframe block
applies to that keyframe; otherwise, the timing function specified for the animation is used.