@keyframes bounceOutDown {
  20% {
    transform: translate3d(0, 20rpx, 0);
  }

  40%,
  45% {
    opacity: 1;
    transform: translate3d(0, -40rpx, 0);
  }

  to {
    opacity: 0;
    transform: translate3d(0, 100%, 0);
  }
}

.ac-bounceOutDown {
  animation: bounceOutDown 1s;
}