.dropdown-submenu {
    position: relative;
}

.nav.navbar-nav .dropdown:hover > ul.dropdown-menu {
    display: block;
}

.dropdown-submenu > .dropdown-menu {
    top: 0;
    left: 100%;
    margin-top: -6px;
    margin-left: -1px;
   
}

.dropdown-submenu:hover > .dropdown-menu {
    display: block;
}

.dropdown-submenu > a:after {
    display: block;
    content: " ";
    float: right;
    width: 0;
    height: 0; 
    margin-top: 5px;
    margin-right: -10px;
}

.dropdown-submenu .pull-left {
    float: none;
}

    .dropdown-submenu.pull-left > .dropdown-menu {
        left: -100%;
        margin-left: 10px;
      
    }

.navbar-collapse.in .dropdown-menu{position:relative; float:none;} /* Positioning for dropdowns when using mobile collapse*/