base.html

<!DOCTYPE html>
<html lang="en">
<head>
	{% load static %}
    <meta charset="utf-8">
	<link rel="stylesheet" href="{% static 'base.css' %}">
    <link rel="stylesheet" href="{% block style %}{% endblock %}">
    <title>{% block title %}{% endblock %}</title>
</head>
<body>
    <div class="heading">
        {% block heading %}{% endblock %}
    </div>
    
    <div class="content">
        {% block content %}{% endblock %}
		<div class="navigation">
            {% block navigation %}{% endblock %}
        </div>
    </div>
</body>
</html>