/*动画上移动*/
.emoji-move-in {
    -webkit-animation: emoji-move-in 0.3s forwards;
    animation: emoji-move-in 0.3s forwards;
}
.emoji-move-out {
    -webkit-animation: emoji-move-out 0.3s forwards;
    animation: emoji-move-out 0.3s forwards;
}

@-webkit-keyframes emoji-move-in {
    0% {
        height: 0;
    }

    100% {
        height: 200px;
    }
}

@-webkit-keyframes emoji-move-out {
    0% {
        height: 200px;
    }

    100% {
        height: 0;
    }
}