#message {
    display: inline-flex;
    align-items: center;
    background-color: #ffffff;
    padding: 10px 20px;
    border-radius: 5px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
    font-size: 1.2em;
    color: #000000;
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.5s ease, bottom 0.5s ease;
    font-family: Arial, sans-serif;
    z-index: 9999;
}

#key {
    display: inline-block;
    background-color: #333333;
    color: #ffffff;
    padding: 5px 10px;
    margin-left: 10px;
    font-weight: bold;
    border-radius: 3px;
    min-width: 30px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    white-space: nowrap;
    font-family: Arial, sans-serif;
}