CSS

animation-direction property

animation-direction  can have the following values -
(1) normal : forward direction, this is the default value.
(2) reverse : the animation sets in the reverse direction ( backward ).
(3) alternate : the animation plays normal first and then reverse.
(4) alternate-reverse: the animation plays reverse first and then normal.


NOTE: animation-duration also matters in animation-direction.

animation-direction in css

div {
  animation-direction: alternate;
}