gistfile1.html

<div class="box" data-hook="admin_users_index_search">
    <h3>Search</h3>
    <form accept-charset="UTF-8" action="/admin/users" class="spree/user_search" id="spree/user_search" method="get">
      <div style="margin:0;padding:0;display:inline">
        <input name="utf8" type="hidden" value="&#x2713;" />
      </div>
      <p>
        Email<br><input id="q_email_cont" name="q[email_cont]" size="18" type="text" />
      </p>
      <div data-hook="admin_users_index_search_buttons">
        <p><button name="button" type="submit"><span> Search</span></button></p>
      </div>
    </form>  
</div>