chamilo-lms2/main/template/default/layout/show_header.tpl

{% include app.template_style ~ "/layout/main_header.tpl" %}
{#
    show_header and show_footer templates are only called when using the Display::display_header and Display::display_footer
    for backward compatibility we suppose that the default layout is one column which means using a div with class span12
#}

{% if app.template.show_header == true %}
    {% if plugin_content_top is not null %}
        <div id="plugin_content_top" class="span12">
            {{ plugin_content_top }}
        </div>
    {% endif %}
    <div class="span12">
        {% include app.template_style ~ "/layout/page_body.tpl" %}
        {% block main_content_section_block %}<section id="main_content">{% endblock main_content_section_block %}
{% endif %}