.mudx-chat .mudx-chat-header {
    font-size: 12px !important;
    margin-bottom: 5px !important;
}
.mudx-chat .mudx-chat-header time{
    font-size: 9px !important;
    margin-bottom: 5px !important;
}
.mudx-chat .mudx-chat-footer {
    font-size: 9px !important;
}