mkdocs-material/material/header.html

<header class="md-header">
  <nav class="md-header-nav md-grid">
    <div class="md-flex">
      <div class="md-flex__cell md-flex__cell--shrink">
        <label class="md-icon md-icon--menu md-header-nav__icon" for="drawer"></label>
      </div>
      <div class="md-flex__cell md-flex__cell--stretch">
        <span class="md-flex__ellipsis md-header-nav__title">
          {{ page_title | default(site_name, true) }}
        </span>
      </div>
      <div class="md-flex__cell md-flex__cell--shrink">                         
        <label class="md-icon md-icon--search md-header-nav__icon" for="search"></label>
        <div class="md-search__overlay"></div>                                  
        <div class="md-search__inner">
          <form class="md-search__form">
            <input type="text" class="md-search__input" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" id="query">
            <label class="md-icon md-icon--search md-search__icon" for="query"></label>
            <div class="md-search__suggest">
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
              FOO<br>
            </div>
          </form>
        </div>
      </div> 
      <div class="md-flex__cell md-flex__cell--shrink">
        <a href="{{ repo_url }}" title="GitHub" class="md-header-source">
          <div class="md-header-source__inner">
            <div class="title">squidfunk/mkdocs-material</div>
            <div class="count">0.2.4 – 177 Stars – 46 Forks</div>
          </div>
        </a>
      </div>
    </div>
  </nav>
  <nav class="md-header-search">
  </nav>
</header>