docs/_themes/sphinx_rtd_theme/searchbox.html

   1 {%- if builder != 'singlehtml' %}
   2 <div role="search">
   3   <form id="rtd-search-form" class="wy-form" action="{{ pathto('search') }}" method="get">
   4     <input type="text" name="q" placeholder="{{ _('Search docs') }}" />
   5     <input type="hidden" name="check_keywords" value="yes" />
   6     <input type="hidden" name="area" value="default" />
   7   </form>
   8 </div>
   9 {%- endif %}