.custom-file-label::after {
    left: 0;
    right: auto;
}

.dropdown-submenu a::after {
    left: 6px;
}

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

.dropdown-toggle-ellipsis::after {
    transform: rotate( -180deg ) !important;
}