taiga-front/app/styles/modules/admin/admin-menu.scss

.admin-menu {
    li {
        @include font-type(text);
        border-bottom: 1px solid darken($whitish, 10%);
        text-transform: uppercase;
        &:last-child {
            border-bottom: 0;
        }
    }
    a {
        display: block;
        padding: 1rem 0 1rem 1rem;
    }
}