You can add custom animation for any element inside your slides. For sliding in you need to add these options to the data attribute data-in and for sliding out add these options to the data attribute data-out, both attributes can have same options.
start animaton at this top point (from up to down animation this value must be negative)
start animation at this left point (from left to right this value must be negative)
start animation at this opacity point (0 - .9)
how long animation should last (in milliseconds)
time should pass before animation starts (in milliseconds)
default easing for this element