.dropdown-menu li {
position: relative;
}
.dropdown-menu .dropdown-submenu {
display: none;
position: absolute;
left: 100%;
top: -7px;
}
.dropdown-menu .dropdown-submenu-left {
right: 100%;
left: auto;
}
.dropdown-menu > li:hover > .dropdown-submenu {
display: block;
}
