#starmap {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.star {
    animation-name: fade;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-fill-mode: both;
    animation-timing-function: linear;
}