jitsi-meet/css/_keyboard-shortcuts.scss

#keyboard-shortcuts {
    display: none;
    position: absolute;
    bottom: 20px;
    left: $defaultToolbarSize;
    overflow: hidden;
    padding: 20px;
    margin-left: 10px;
    z-index: 10;
    border-radius: $borderRadius;
    background-attachment: scroll;
    background-size: auto auto;
    color: rgba(255, 255, 255, .8);
    background-color: rgba(0, 0, 0, .8);
}

#keyboard-shortcuts .item-action {
    color: #209EFF;
    font-size: 14pt;
    padding-right: 5px;
}

#keyboard-shortcuts-list {
    list-style-type: none;
}