For a long time it had seemed to me that life was about to begin - real life. But there was always some obstacle in the way, something to be gotten through first, some unfinished business, time still to be served, or a debt to be paid. Then life would begin. At last it dawned on me that these obstacles were my life.
Alfred D. Souza

transition-timing-function

The transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.
transition-timing-function css reference