* {
    margin: 0;
    padding: 0;
}

:root {
    background-color: #000;
}

.sky {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    -webkit-perspective: 500px;
    perspective: 500px;
    -webkit-perspective-origin: center center;
    perspective-origin: center center;
}

.sky > div {
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 6px;
    background-color: transparent;
    border-radius: 50%;
    -webkit-transform: translateZ(-4500px);
    transform: translateZ(-4500px);
}

@-webkit-keyframes move {
    from {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    to {
        opacity: 0;
        -webkit-transform: translateZ(500px);
        transform: translateZ(500px);
    }
}

@keyframes move {
    from {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    to {
        opacity: 0;
        -webkit-transform: translateZ(500px);
        transform: translateZ(500px);
    }
}