.MyMenu {
            margin-left:20px;
            margin-right:20px;
        }
        .navbar-default {
            background-color:#f6edc9;
        }

        .dropdown-submenu {
            position: relative;
        }

            .dropdown-submenu a::after {
                transform: rotate(-90deg);
                position: absolute;
                right: 6px;
                top: .8em;
            }

            .dropdown-submenu .dropdown-menu {
                top: 0;
                left: 100%;
                margin-left: .1rem;
                margin-right: .1rem;
            }