.dropdown-menu li{
    position    : relative;
}
.dropdown-menu .submenu{ 
    display     : none;
    position    : absolute;
    left        : 100%; 
    top         : -7px;
}
.dropdown-menu .submenu-left{ 
    right       : 100%; 
    left        : auto;
}
.dropdown-menu > li:hover{ 
    background-color: #5c5daa 
}
.dropdown-menu > li:hover > .submenu{
    display     : block;
}