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

.rotate-center {
	-webkit-animation: rotate-center 1.8s ease-in-out infinite both;
            animation: rotate-center 1.8s ease-in-out infinite both;
}