body {
    margin: 0;
    padding: 8px;
    touch-action: none;
    overflow: hidden;
    background-color: #2b2b2b;
}

#virtual-keys {
    display: none;
    gap: 10px;
    border-bottom: #fff solid 1px;
    padding-bottom: 5px;
    margin-bottom: 5px;
}

#virtual-keys .key {
    color: #fff;
    border: #fff solid 1px;
    font-size: 12px;
    width: 30px;
    text-align: center;
    cursor: pointer;
}

#ctrl-btn.active {
    color: green;
    border: green solid 1px;
}