Django Basis html

base.html

<!DOCTYPE html>
<html>
    <head>
        <title>My Project</title>
    </head>

    <body>
    {% block content %}{% endblock content %}
    </body>
</html>

And say you have an app called myapp with a view.html page,

{% extends "base.html" %}

{% block content %}
    <h2>Content for My App</h2>
    <p>Stuff etc etc.</p>
{% endblock content %}
Cautious Corncrake