Edit in JSFiddle

@-webkit-keyframes rotate {
    from {
        -webkit-transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
    }
}
.animation-rotate {
    -webkit-animation-name: rotate;
    -webkit-animation-duration: 25s;
    -webkit-animation-iteration-count: infinite;
    -webkit-transition-timing-function: linear;
}