inc_navbar_aluno.html

<!--navbar-->
<nav> 
    <!-- Barra de navegação -->
    <div class="w3-container-fluid navbar naveg">
        <div class="w3-bar naveg">
            <a href="#" class="w3-bar-item w3-button w3-disabled">MENU >> </a><!--principal-->
            <a href="dashboard_aluno.php" class="w3-bar-item w3-button w3-hide-small w3-hover-blue">Perfil</a>
            <a href="logout.php" class="w3-bar-item w3-button w3-hide-small w3-hover-blue w3-right">Sair</a>
            <!-- Botão de hamburguer para dispositivos móveis -->
            <a href="javascript:void(0)" class="w3-bar-item w3-button w3-right w3-hide-large w3-hide-medium" onclick="myFunction()">&#9776;</a>
        </div>
        <!-- menu responsivo -->
        <div id="demo" class="w3-bar-block naveg w3-card-4 w3-hide w3-hide-large w3-hide-medium">
            <a href="dashboard_aluno.php" class="w3-bar-item w3-button w3-hover-blue">Perfil</a>
            <a href="logout.php" class="w3-bar-item w3-button w3-hover-blue">Sair</a>
        </div>
    </div>
</nav>
<!--fim navbar-->

<!--scripts-->
<!-- menu navbar hamburger-->
<script>
    function myFunction() {
        var x = document.getElementById("demo");
        if (x.className.indexOf("w3-show") == -1) {
            x.className += " w3-show";
        } else { 
            x.className = x.className.replace(" w3-show", "");
        }
    }
</script>