@media (min-width: 992px) {
    .dropdown-menu .dropdown-toggle:after {
        border-top: .3em solid;
        border-right: .3em solid transparent;
        border-bottom: 0;
        border-left: .3em solid transparent;
        display: inline-flex;
    }

    .dropdown-menu .dropdown-menu {
        margin-left: 0;
        margin-right: 0;
    }

    .dropdown-menu li {
        position: relative;
    }

    .nav-item .submenu {
        display: none;
        position: absolute;
        left: 100%;
        top: -7px;
    }

    .nav-item .submenu-left {
        right: 100%;
        left: auto;
    }

    .dropdown-menu > li:hover {
        background-color: #f1f1f1
    }

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

    .dropdown-menu > li > a:hover:after {
        text-decoration: underline;
        transform: rotate(-90deg);
    }

}