templates/base.html.j2

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <style>
            @font-face {
                font-family: 'fira_sansregular';
                src: url('{{ url_for('static', filename='fonts/firasans-regular-webfont.woff2') }}') format('woff2'),
                    url('{{ url_for('static', filename='fonts/firasans-regular-webfont.woff') }}') format('woff');
            }
            </style>
        <link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}" />
        <title>DevOps Solutions Map</title>
    </head>

    <body>
        <header style="background-image: url('{{ url_for('static', filename='img/logo.png') }}')">
            {% include 'main_menu.html.j2' %}
        </header>
        <section>
            {% block content %} {% endblock %}
        </section>
        <footer>
            {% include 'footer.html.j2' %}
        </footer>
    </body>

</html>