body {
    margin: 0;
    overflow: hidden;
    background-color: black;
}

#stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    perspective: 1000px;
    overflow: hidden;
    z-index: -10;
}

.overlay {
    background: none;
}

.star {
    position: absolute;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 0 4px #fff;
    transform-origin: center;
    animation: move linear infinite;
}

@keyframes move {
    from {
        transform: translateZ(0) scale(0.5);
    }
    to {
        transform: translateZ(1000px) scale(2);
    }
}