<!doctype html>
<head>
{% block title -%}
<title>Default Title</title>
{% endblock %}
</head>
<body>
{% block content -%}
default content
{% endblock %}
</body>
<!doctype html>
<head>
{% block title -%}
<title>Default Title</title>
{% endblock %}
</head>
<body>
{% block content -%}
default content
{% endblock %}
</body>