.popup-banner {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background-color: #dc3545; /* red background */
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    opacity: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
    z-index: 9999;
}

.popup-banner.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}