<ul class="nav navbar-nav navbar-right text-uppercase ml-auto">
    <li class="dropdown">
    <a href="#" class="dropdown-toggle nav-link js-scroll-trigger" data-toggle="dropdown" role="button" aria-expanded="false"><?php echo $idioma ?> <span class="caret"></span></a>
    <ul class="dropdown-menu">
        <li><a href="index-es.php" class="lang-menu">Español</a></li>
        <li><a href="index-en.php" class="lang-menu">English</a></li>
        <li><a href="index-pt.php" class="lang-menu">Português</a></li>
    </ul>
    </li>
</ul>
