#robin_tab > div:last-child {
    height: 112px !important;
    width: 74px !important;
    border-radius: 0px !important;
    background: url(IconoChat.png) no-repeat scroll 0 0 transparent !important;
    background-size: cover !important;
}

#robin_tab > div:last-child img {
    display: none !important;
}

#robin_tab {
    background: transparent !important;
    position: fixed !important;
    bottom: 50% !important;
    right: 50px !important;
}
#robin_tab_div {
    display: none !important;
}
#robin_tab_icon {
    display: none !important;
}