SOURCE

<div class="normal-bg"></div>

 
   html,body{
      font-size: 100px;
    }
 .normal-bg{
      width: 5.5rem;
    height: 3.25rem;
    position: relative;
    }
    .normal-bg:after {
    content: "";
    display: block;
    width: 5.5rem;
    height: 3.25rem;
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate3d(-50%,-50%,0);
    transform: translate3d(-50%,-50%,0);
    background-image: url(https://vrlab-static.ljcdn.com/release/web/liveentry.7e323f25.png);
    background-size: 132rem 3.25rem;
    background-repeat: no-repeat;
    -webkit-animation: liveentry-sprites-animation .958333333333333s steps(23) 0s infinite normal;
    animation: liveentry-sprites-animation .958333333333333s steps(23) 0s infinite normal;
}
@-webkit-keyframes liveentry-sprites-animation {
    0% {
        background-position: 0 0
    }

    to {
        background-position: -126.5rem 0
    }
}

@keyframes liveentry-sprites-animation {
    0% {
        background-position: 0 0
    }

    to {
        background-position: -126.5rem 0
    }
}