Listing 28.2. base.html.twig
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <title>{% block title %}Jan Kochanowski: Treny{% endblock %}</title>
        <link rel="stylesheet" href="{{ asset("css/style.css") }}" />
    </head>
    <body>
        {% block body %}{% endblock %}
    </body>
</html>