.notification {
    visibility: hidden;
    background-color: #ff5239;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    border-radius: 5px;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.5s, visibility 0.5s;
}

.notification.show {
    visibility: visible;
    opacity: 1;
}