ClickHouse/docs/tools/mkdocs-material-theme/partials/header.html

<header class="md-header" data-md-component="header">

  <nav class="md-header-nav md-grid">
    <div class="md-flex">
      <div class="md-flex__cell md-flex__cell--shrink">
        <a href="/" title="{{ config.site_name }}" class="md-header-nav__button md-logo">
          {% if config.theme.logo.icon %}
            <i class="md-icon">{{ config.theme.logo.icon }}</i>
          {% else %}
            <img src="{{ base_url }}/{{ config.theme.logo }}" width="40" height="40">
          {% endif %}
        </a>
      </div>
      <div class="md-flex__cell md-flex__cell--shrink">
        <label class="md-icon md-icon--menu md-header-nav__button" for="drawer"></label>
      </div>
      <div class="md-flex__cell md-flex__cell--stretch">
        <div class="md-flex__ellipsis md-header-nav__title" data-md-component="title">
          {% block site_name %}
            {% if config.site_name == page.title %}
              {{ config.site_name }}
            {% else %}
              <span class="md-header-nav__topic">
                {{ config.site_name }}
              </span>
              <span class="md-header-nav__topic">
                {{ page.title }}
              </span>
            {% endif %}
          {% endblock %}
        </div>
      </div>
      <div class="md-flex__cell md-flex__cell--shrink">
      </div>
      <div class="md-flex__cell md-flex__cell--shrink">
        {% block search_box %}
          {% if "search" in config["plugins"] %}
            <label class="md-icon md-icon--search md-header-nav__button" for="search"></label>
            {% include "partials/search.html" %}
          {% endif %}
        {% endblock %}
      </div>
      {% if page %}
        <div class="md-flex__cell md-flex__cell--shrink">
          <div id="md-language-switch" class="md-header-nav__source">
            {% if config.theme.extra.opposite_lang == 'en' %}
              <a href="{{ base_url }}/../{{ config.theme.extra.opposite_lang }}/{{ page.url or '' }}" title="Switch to English" class="md-flex__ellipsis md-header-nav__title">
                <svg xmlns="http://www.w3.org/2000/svg" width="50" height="30" viewBox="0,0 25,15" style="border:1px solid #eee;margin: .8rem 0 0 -1.25rem;">
                  <rect width="25" height="15" fill="#00247d"></rect>
                  <path d="M 0,0 L 25,15 M 25,0 L 0,15" stroke="#fff" stroke-width="3"></path>
                  <path d="M 12.5,0 V 15 M 0,7.5 H 25" stroke="#fff" stroke-width="5"></path>
                  <path d="M 12.5,0 V 15 M 0,7.5 H 25" stroke="#cf142b" stroke-width="3"></path>
                </svg>
              </a>
            {% else %}
              <a href="{{ base_url }}/../{{ config.theme.extra.opposite_lang }}/{{ page.url or '' }}" title="Переключить на русский язык" class="md-flex__ellipsis md-header-nav__title">
                <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 10 6" width="50" height="30" style="border: 1px solid #eee;margin: .8rem 0 0 -1.25rem">
                  <rect fill="#fff" width="10" height="3"></rect>
                  <rect fill="#d52b1e" y="3" width="10" height="3"></rect>
                  <rect fill="#0039a6" y="2" width="10" height="2"></rect>
                </svg>
              </a>
            {% endif %}
          </div>
        </div>
      {% endif %}
    </div>
  </nav>
</header>