.circle-outer {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    position: relative;
    background: #3cb6f8;
    /* Old browsers */
    background: -moz-linear-gradient(45deg, #3cb6f8 60%, #ffffff 100%);
    /* FF3.6-15 */
    background: -webkit-linear-gradient(45deg, #3cb6f8 60%, #ffffff 100%);
    /* Chrome10-25,Safari5.1-6 */
    background: linear-gradient(45deg, #3cb6f8 60%, #ffffff 100%);
    /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#3cb6f8', endColorstr='#ffffff', GradientType=1);
    /* IE6-9 fallback on horizontal gradient */
    animation: loading_anim .5s infinite;
}

.circle-inner {
    height: 10px;
    width: 10px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 5px;
    left: 5px;
}

@keyframes loading_anim {
    to {transform: rotate(360deg)}
}