views/layout.njk

<!DOCTYPE html>
<html>
    <head>

        {% block head %}
            <title>Gym Manager - Duque</title>
            <link rel="shortcut icon" href="assets/images/icon.png" type="image/png">
        {% endblock %}

        <link rel="stylesheet" href="/styles.css">     
        
    </head>

    <body>
        <header>
            <div class="links">
                <a href="/" class="active">Instrutores</a>
                <a href="/members">Membros</a>
            </div>            
        </header>
    
        {% block content %}{% endblock %}

    </body>

</html>