c3简单滑动动画

@keyframes move {
    0% {
        margin: 0;
    }

    100% {
        margin-top: 50%;
        transform: translateY(-50%);
    }
}


.yufufei {
    width: 800px;
    border: 1px solid #fff;
    border-radius: 10px;
    background-color: rgba(244, 251, 251, 0.47);
    margin: 0 auto;
    padding: 10px;
    margin-top: 50%;
    transform: translateY(-50%);
    animation-name: move;
    animation-duration: 2s;
}