.load-page-img {
    width: 6em;
    animation: 4s linear 0s normal none infinite running animation-rotate;
    -webkit-animation: 4s linear 0s normal none infinite running animation-rotate;
}

@keyframes animation-rotate{
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}