.dropdown-menu .sub-menu {left: 100%;position: absolute;top: 0;visibility: hidden;margin-top: -1px;}
.dropdown-menu .sub-menu-rigth {left: 0%;position: absolute;top: 0;visibility: hidden;margin-top: -1px;}
.dropdown:hover .dropdown-menu {display: block;}
.dropdown li:hover  ul {visibility: visible;display:block;}
.dropdown li:hover ul ul{visibility: hidden;}
.dropdown li ul li:hover  ul {visibility: visible;display:block;}