<!DOCTYPE html> <html{% if app.request.locale is defined and app.request.locale %} lang="{{ app.request.locale }}"{% endif %}> <head> {% block metas %}<meta charset="UTF-8">{% endblock %} <title>{% block title %}Welcome!{% endblock %}</title> {% block stylesheets %}{% endblock %} </head> <body> {% block body %}{% endblock %} {% block javascripts %}{% endblock %} </body> </html>