<div id="kefu" class="kefu-link" style="position: absolute; inset: 491.953px auto auto 285px;"><a href=""><img src="images/kefu@2x.png"></a></div>

.kefu-link {
    position: fixed;
    z-index: 99;
    right: 15px;
    bottom: 15%;
    font-size: 0;
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-animation-name: bounce;
    animation-name: bounce;
    -webkit-animation-iteration-count: 2;
    animation-iteration-count: 2;
}


@-webkit-keyframes bounce {
    0%,20%,53%,80%,to {
        -webkit-animation-timing-function: cubic-bezier(.215,.61,.355,1);
        animation-timing-function: cubic-bezier(.215,.61,.355,1);
        -webkit-transform: translateZ(0);
        transform: translateZ(0)
    }

    40%,43% {
        -webkit-transform: translate3d(0,-10px,0);
        transform: translate3d(0,-10px,0)
    }

    40%,43%,70% {
        -webkit-animation-timing-function: cubic-bezier(.755,.05,.855,.06);
        animation-timing-function: cubic-bezier(.755,.05,.855,.06)
    }

    70% {
        -webkit-transform: translate3d(0,-5px,0);
        transform: translate3d(0,-5px,0)
    }

    90% {
        -webkit-transform: translate3d(0,-5px,0);
        transform: translate3d(0,-5px,0)
    }
}

@keyframes bounce {
    0%,20%,53%,80%,to {
        -webkit-animation-timing-function: cubic-bezier(.215,.61,.355,1);
        animation-timing-function: cubic-bezier(.215,.61,.355,1);
        -webkit-transform: translateZ(0);
        transform: translateZ(0)
    }

    40%,43% {
        -webkit-transform: translate3d(0,-10px,0);
        transform: translate3d(0,-10px,0)
    }

    40%,43%,70% {
        -webkit-animation-timing-function: cubic-bezier(.755,.05,.855,.06);
        animation-timing-function: cubic-bezier(.755,.05,.855,.06)
    }

    70% {
        -webkit-transform: translate3d(0,-5px,0);
        transform: translate3d(0,-5px,0)
    }

    90% {
        -webkit-transform: translate3d(0,-5px,0);
        transform: translate3d(0,-5px,0)
    }
}

.bounce {
    -webkit-animation-name: bounce;
    animation-name: bounce;
    -webkit-transform-origin: center bottom;
    transform-origin: center bottom
}