Issue #3284179 by pivica: Add block content in region-navbar template

  {% endif %}

  {% do attributes.setAttribute('id', 'navbarResponsive') %}

  <div{{ attributes.addClass(classes) }}>

    {# Use block content so child themes can add a wrapper here for more layout

       control, for example for sidebar navigation, etc. #}

    {% block content %}

      {# @TODO - consider adding wrapper here for 2.x version. #}

      {{- content -}}

    {% endblock %}

    {% block offcanvas_close -%}

      {% if navbar_offcanvas_position -%}

        <a href="#" class="offcanvas-close-link btn{{ offcanvas_close_classes }}" title="{{ 'Close navigation'|t }}"><span class="label">{{ 'close'|t }}</span></a>