#message-box {
    display: none;
    position: fixed;
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    max-width: 80%;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    font-size: 14px;
    opacity: 0; 
    transition: opacity 0.5s ease-in-out; 
}

#message-box.show {
    opacity: 1; 
}

#message-box.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

#message-box.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}