<!doctype html> <html lang="en"> <head> {% block head %} <!-- Required meta tags --> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> {% block styles %} <!-- Bootstrap CSS --> {{ bootstrap.load_css() }} {% endblock %} <title>{% block title %}{% endblock %}</title> {% endblock %} </head> <body> <!-- Your page content --> {% block content %}{% endblock %} {% block scripts %} <!-- Optional JavaScript --> {{ bootstrap.load_js() }} {% endblock %} </body> </html>