<!DOCTYPE html>
-<html{% if lang is defined and lang %} lang="{{ lang }}"{% endif %}>
- <head>
+<html{% if locale is defined and locale %} lang="{{ locale }}"{% endif %}>
+ <head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb#">
{% block metas %}<meta charset="UTF-8">{% endblock %}
<title>{% block title %}Welcome!{% endblock %}</title>
{% block stylesheets %}{% endblock %}