#detail-information .nav .nav-item > a.nav-link.active {
    /*
     * neither of the below two customizations are necessary; the default
     * style is good enough
     */

    /*
    pointer-events: none;
    cursor: not-allowed;
   */

}

#detail-information .nav .nav-item {
    font-size: 1.1em;
}

#detail-information .nav .nav-item a {
    padding: 5px;
}