.message {
    width: 100%;
    padding: 1.5em;
    position: fixed;
    z-index: 100;
    text-align: center;
    color: #fff;
    font-size: 1.5em;
    font-weight: 700;
}

.message.success {
    background-color: #4CAF50;
}

.message.error {
    background-color: #f44336;
}