Pre-defined classes for various CSS animations. Using it is as simple as including assigning the class to the element.
.wdpk-fadeInRightBig
                    .wdpk-fadeInUp
                    .wdpk-fadeInUpBig
                    .wdpk-flipInX
                    .wdpk-flipInY
                    .wdpk-lightSpeedIn
                    .wdpk-lightSpeedOut
                    .wdpk-rotateIn
                    .wdpk-rotateInDownLeft
                    .wdpk-rotateInDownRight
                    .wdpk-rotateInUpLeft
                    .wdpk-rotateInUpRight
                    .wdpk-rollIn
                    .wdpk-zoomIn
                    .wdpk-zoomInDown
                    .wdpk-zoomInLeft
                    .wdpk-zoomInRight
                    .wdpk-zoomInUp
                    .wdpk-slideInDown
                    .wdpk-slideInLeft
                    .wdpk-slideInRight
                    .wdpk-slideInUp
                    .wdpk-rotateOutDownLeft
                    .wdpk-rotateOutDownRight
                    .wdpk-rotateOutUpLeft
                    .wdpk-rotateOutUpRight
                    .wdpk-fadeOutDown
                    .wdpk-fadeOutDownBig
                    .wdpk-fadeOutLeft
                    .wdpk-fadeOutLeftBig
                    .wdpk-fadeOutRight
                    .wdpk-fadeOutRightBig
                    .wdpk-fadeOutUp
                    .wdpk-fadeOutUpBig
                    .wdpk-flipOutX
                    .wdpk-flipOutY
                    .wdpk-rotateOut
                    .wdpk-hinge
                    .wdpk-rollOut
                    .wdpk-zoomOut
                    .wdpk-zoomOutDown
                    .wdpk-zoomOutLeft
                    .wdpk-zoomOutRight
                    .wdpk-zoomOutUp
                    .wdpk-slideOutDown
                    .wdpk-slideOutLeft
                    .wdpk-slideOutRight
                    .wdpk-slideOutUp
                    .wdpk-fadeOut