mkdocs-material/material/partials/search.html

<div class="md-search" data-md-component="search">
  <div class="md-search__overlay"></div>
  <div class="md-search__inner">
    <form class="md-search__form" name="search">
      <input type="text" class="md-search__input" name="query" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false">
      <label class="md-icon md-search__icon" for="search"></label>
    </form>
    <div class="md-search__output">
      <div class="md-search__scrollwrap">
        <div class="md-search-result" data-md-component="result"></div>
      </div>
    </div>
  </div>
</div>