Transition Timing Function

Class	Properties
ease-linear	transition-timing-function: linear;
ease-in	transition-timing-function: cubic-bezier(0.4, 0, 1, 1);
ease-out	transition-timing-function: cubic-bezier(0, 0, 0.2, 1);
ease-in-out	transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);