/*CSS动画*/
@keyframes fadeInDownUi
  from
    opacity 0
    transform translate3d(0, -100%, 0)
  to
    opacity 1
    transform translate3d(0, 0, 0)
@keyframes fadeOutUpUi
  from
    opacity 1
  to
    opacity 0
    transform translate3d(0, -100%, 0)

.fadeDownUpUi-enter-active
  animation fadeInDownUi .3s ease-in-out
.fadeDownUpUi-leave-active
  animation fadeOutUpUi .3s