mation: ball-fussion-ball1 1s 0s ease infinite;
}
.la-ball-fussion &gt; div:nth-child(1) {
    top: 0;
    left: 50%;
    z-index: 1;
}
.la-ball-fussion &gt; div:nth-child(2) {
    top: 50%;
    left: 100%;
    z-index: 2;
    -webkit-animation-name: ball-fussion-ball2;
       -moz-animation-name: ball-fussion-ball2;
         -o-animation-name: ball-fussion-ball2;
            animation-name: ball-fussion-ball2;
}
.la-ball-fussion &gt; div:nth-child(3) {
    top: 100%;
    left: 50%;
    z-index: 1;
    -web