A collection of easing functions to use in CSS animations. Functions taken from easings.net

LESS-Easings.less

// easing functions from http://easings.net/

@easeInSine: cubic-bezier(0.47, 0, 0.745, 0.715);
@easeOutSine: cubic-bezier(0.39, 0.575, 0.565, 1);
@easeInOutSine: cubic-bezier(0.445, 0.05, 0.55, 0.95);

@easeInQuad: cubic-bezier(0.55, 0.085, 0.68, 0.53);
@easeOutQuad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
@easeInOutQuad: cubic-bezier(0.455, 0.03, 0.515, 0.955);

@easeInCubic: cubic-bezier(0.55, 0.055, 0.675, 0.19);
@easeOutCubic: cubic-bezier(0.215, 0.61, 0.355, 1);
@easeInOutCubic: cubic-bezier(0.645, 0.045, 0.355, 1);

@easeInQuart: cubic-bezier(0.895, 0.03, 0.685, 0.22);
@easeOutQuart: cubic-bezier(0.165, 0.84, 0.44, 1);
@easeInOutQuart: cubic-bezier(0.77, 0, 0.175, 1);

@easeInQuint: cubic-bezier(0.755, 0.05, 0.855, 0.06);
@easeOutQuint: cubic-bezier(0.23, 1, 0.32, 1);
@easeInOutQuint: cubic-bezier(0.86, 0, 0.07, 1);

@easeInExpo: cubic-bezier(0.95, 0.05, 0.795, 0.035);
@easeOutExpo: cubic-bezier(0.19, 1, 0.22, 1);
@easeInOutExpo: cubic-bezier(1, 0, 0, 1);

@easeInCirc: cubic-bezier(0.6, 0.04, 0.98, 0.335);
@easeOutCirc: cubic-bezier(0.075, 0.82, 0.165, 1);
@easeInOutCirc: cubic-bezier(0.785, 0.135, 0.15, 0.86);

@easeInBack: cubic-bezier(0.6, -0.28, 0.735, 0.045);
@easeOutBack: cubic-bezier(0.175, 0.885, 0.32, 1.275);
@easeInOutBack: cubic-bezier(0.68, -0.55, 0.265, 1.55);