.stars {
    position: fixed;
    width: 100%;
    height: 100%;

    background: transparent var(--bg-stars);

    animation: moveStars var(--stars-speed) linear infinite;

    pointer-events: none;
    z-index: 0;
}


@keyframes moveStars {
    from { 
        background-position: 0 0; 
    }
    to { 
        background-position: var(--stars-move-x) var(--stars-move-y); 
    }
}