.repeat-animation.ng-enter {
  -webkit-animation: enter_animation 0.5s;
  animation: enter_animation 0.5s;
}
.repeat-animation.ng-leave {
  -webkit-animation: leave_animation 0.5s;
  animation: leave_animation 0.5s;
}

@-webkit-keyframes enter_animation {
  from { opacity:0; }
  to { opacity:1; background-color: lightgray; }
}

@keyframes enter_animation {
  from { opacity:0; }
  to { opacity:1;  background-color: lightgray; }
}

@-webkit-keyframes leave_animation {
  from { opacity:1; }
  to { opacity:0; }
}

@keyframes leave_animation {
  from { opacity:1; }
  to { opacity:0; }
}