in base.html
        {% block begin_middle_wrapper %}<div id="middle_wrapper">{% endblock %}
        {% block middle %}
                {% block carusel %}{% endblock %}
        {% endblock %}
        {% block end_middle_wrapper %}</div>{% endblock %}



in index.html
        {% block begin_middle_wrapper %}{{ block.super }}{% endblock %}
        {% block carusel %}
                HTML CODE
                ...
        {% endblock %}
        {% block end_middle_wrapper %}{{ block.super }}{% endblock %}