// vue transition 动画
.list-move, /* apply transition to moving elements */
.list-enter-active,
.list-leave-active {
  transition: all 0.5s ease;
}

.list-enter-from,
.list-leave-to {
  opacity: 0;
  transform: translateY(-30px);
}

/* ensure leaving items are taken out of layout flow so that moving
   animations can be calculated correctly. */
.list-leave-active {
  position: absolute;
}