Edit in JSFiddle

<div class="container">
    <div class="major">
        <div class="minor"></div>
        <div class="mask"></div>
    </div>
</div>

html, body {
    height: 100%;
}
.container {
    width: 100%;
    height: 100%;
    background-color: #000;
}
.major {
    background-color: #05f;
    width: 100px;
    height: 100px;
    border-radius: 50px;
    position: relative;
    margin: 0 auto;
    top: 50px;
    -webkit-animation: rotating 3s linear infinite;
    overflow: hidden;
}
.minor {
    background-color: #fff;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    position: absolute;
    top: 50px;
    left: 5px;
    box-shadow: 0 0 25px 20px #fff;
}
.mask {
    background-color: #000;
    width: 96px;
    height: 96px;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
}
.major:nth-child(2) .minor {
    top: 25px;
    left: 0;
}
@-webkit-keyframes rotating {
    from {
        -webkit-transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
    }
}