/* Fullscreen background container */
#sfb-background {
    position: fixed;
    inset: 0; /* shorthand for top:0; right:0; bottom:0; left:0 */
    z-index: -3; /* keeps it behind everything */
    pointer-events: none; /* ensures it won’t block clicks */

    /* Customize your background below */
    background-image: url('https://parkcopilot.com/wp-content/uploads/2025/09/DN-06_1.gif');
    background-size: cover;        /* cover, contain, or auto */
    background-position: center;   /* adjust as needed */
    background-repeat: no-repeat;  /* repeat, repeat-x, repeat-y */
    background-attachment: fixed;  /* fixed = parallax effect */
    filter: brightness(.2);
}