body {
}

.centered-spinning {
    position: fixed;
    top: 50%;
    left: 50%;
    margin-left: -50px;
    margin-top: -50px;
}

.spinning {
    width: 100px;
    height: 100px;
    background: #f00;
    -webkit-animation-name: spin;
    -webkit-animation-duration: 1000ms;
    -webkit-animation-iteration-count: infinite;
    -webkit-animation-timing-function: ease;
    -moz-animation-name: spin;
    -moz-animation-duration: 1000ms;
    -moz-animation-iteration-count: infinite;
    -moz-animation-timing-function: ease;
    -ms-animation-name: spin;
    -ms-animation-duration: 1000ms;
    -ms-animation-iteration-count: infinite;
    -ms-animation-timing-function: ease;
    animation-name: spin;
    animation-duration: 1000ms;
    animation-iteration-count: infinite;
    animation-timing-function: ease;
}

@-ms-keyframes spin {
    from {
        -ms-transform: rotate(0deg);
    }

    to {
        -ms-transform: rotate(360deg);
    }
}

@-moz-keyframes spin {
    from {
        -moz-transform: rotate(0deg);
    }

    to {
        -moz-transform: rotate(360deg);
    }
}

@-webkit-keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
    }

    to {
        -webkit-transform: rotate(360deg);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}