body {
    background-color: gray;
    overflow: hidden;
}

.image {
    position: absolute;
    left: 20%;
    top: -15%;
    width: 1000px;
    height: 1000px;
    -webkit-animation:spin 4s linear infinite;
    -moz-animation:spin 4s linear infinite;
    animation:spin 4s linear infinite;
}

@-moz-keyframes
spin {
    100% { -moz-transform: rotate(360deg); }
}

@-webkit-keyframes
spin {
    100% { -webkit-transform: rotate(360deg); }
}

@keyframes
spin {
    100% {
        -webkit-transform: rotate(360deg);
        transform:rotate(360deg); }
}