docs/python_docs/themes/mx-theme/mxtheme/header.html

<header class="mdl-layout__header {% if theme_header_waterfall|tobool %}mdl-layout__header--waterfall{% endif %} {% if theme_header_scroll|tobool %}mdl-layout__header--scroll{% endif %}">
    <div class="mdl-layout__header-row">
        {% if theme_show_header_title|tobool %}
        <!-- Title -->
        <span class="mdl-layout-title">
            <a class="brand" href="{{ pathto(master_doc) }}">
                {%- if logo %}
                <img class="logo" src="{{ pathto('_static/' + logo, 1) }}" alt="{{ project }}"/>
                {%- else %}
                {{ project }}
                {%- endif %}
            </a>
        </span>
        {% endif %}
        <nav class="mdl-navigation breadcrumb">
            {%- for parent in parents %}
            <a class="mdl-navigation__link" href="{{ parent.link|e }}">{{ parent.title }}</a><i class="material-icons">navigate_next</i>
            {%- endfor %}
            <a class="mdl-navigation__link is-active">{{ title }}</a>
        </nav>
        <div class="mdl-layout-spacer"></div>
        <nav class="mdl-navigation">
        {% include "header_search.html" %}
        {% include "header_sourcelink.html" %}
        </nav>
    </div>
    <div class="mdl-layout__header-row header-links">
      <div class="mdl-layout-spacer"></div>
      <nav class="mdl-navigation">
      {%- for title, href, isExternal, icon in theme_header_links %}
          {% if isExternal %}
              <a  class="mdl-navigation__link" href="{{ href }}">
                  {% if icon %}<i class="{{ icon }}"></i>{% endif %}
                  {{ title }}
              </a>
          {%- else -%}
              <a  class="mdl-navigation__link" href="{{ pathto(href) }}">
                  {% if icon %}<i class="{{ icon }}"></i>{% endif %}
                  {{ title }}
              </a>
          {%- endif -%}
      {%- endfor %}
      </nav>
    </div>
</header>