.dropdown-submenu {
    position: relative;
}

    .dropdown-submenu > a:after {
        content: "\f0da";
        float: right;
        border: none;
        font-family: 'FontAwesome';
    }

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

/*
*
* ==========================================
* FOR DEMO PURPOSES
* ==========================================
*
*/

/*body {
    background: #4568DC;
    background: -webkit-linear-gradient(to right, #4568DC, #B06AB3);
    background: linear-gradient(to right, #4568DC, #B06AB3);
    min-height: 100vh;
}*/

code {
    color: #B06AB3;
    background: #fff;
    padding: 0.1rem 0.2rem;
    border-radius: 0.2rem;
}

@media (min-width: 991px) {
    .dropdown-menu {
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }
}