#MenuPrincipal_ar .RadMenu {
    width: 100% !important;
    height: 100% !important;
}
#MenuPrincipal_ar .Item{
     font-family:tahoma;
    font-size: 17px;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    line-height: 26px;
}
#MenuPrincipal_ar .RadMenu .rmLink{padding:0px !important;}