.dropdown-menu {
    margin-top: 0;
}

.dropdown-menu .dropdown-toggle::after {
    vertical-align: middle;
    border-left: 4px solid;
    border-bottom: 4px solid transparent;
    border-top: 4px solid transparent;
}

.dropdown-menu .dropdown .dropdown-menu {
    left: 100%;
    top: 0%;
    margin: 0 20px;
    border-width: 0;
}

.dropdown-menu .dropdown .dropdown-menu.left {
    right: 100%;
    left: auto;
}

.dropdown-menu>li a:hover,
.dropdown-menu>li.show {
    color: black;
}

.dropdown-menu>li.show>a {
    color: black;
}

@media (min-width: 768px) {
    .dropdown-menu .dropdown .dropdown-menu {
        margin: 0;
        border-width: 1px;
    }
}