Clima Sub-sub Menu

/*——- menu sub sub ————*/
.main_menu nav > ul > li ul.sub_menu > li{
position: relative;
}

.main_menu nav > ul > li:hover > ul.sub_menu{
overflow: initial;
}

.main_menu nav ul.sub_menu li ul.sub_menu{
visibility: hidden;
opacity: 0;
top: 0px;
left: 180px;
}

.main_menu nav ul.sub_menu li:hover > ul.sub_menu{
visibility: visible;
opacity: 1;
}
/*———————————*/