weseek__growi/src/server/views/layout-growi/widget/header.html

<header id="page-header">

  <div id="grw-subnav" data-is-forbidden-page="{{ forbidden }}"></div>
  <div id="grw-subnav" data-is-forbidden-page="{{ forbidden }}"></div>

    {% if not page and not forbidden and ('/' === path or 'crowi' === getConfig('crowi', 'customize:behavior')) and not isUserPageList(path) and !isTrashPage() %}
      {% if '/' === path.slice(-1) %}
        {% include '../../widget/create_portal.html' %}
      {% endif %}
    {% endif %}

</header>