.popup-message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 5px;
    font-size: 14px;
    color: #fff;
    z-index: 1000;
    transition: opacity 0.5s ease-in-out;
}

.popup-message.success {
    background: #28a745;
}

.popup-message.error {
    background: #dc3545;
}

.fade-out {
    opacity: 0;
}