@media only screen and (min-width: 768px) {
    .dropdown-submenu {
        position: relative;
    }

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

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

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

    .dropdown-submenu > a:after {
        display: block;
        content: " ";
        float: right;
        width: 0;
        height: 0;
        border-color: transparent;
        border-style: solid;
        border-width: 5px 0 5px 5px;
        border-left-color: #ccc;
        margin-top: 5px;
        margin-right: -10px;
    }

    .dropdown-submenu:hover > a:after {
        border-left-color: #fff;
    }
}