anchor.diff:                User.alphabetized.map{ |u| [u.name, u.uid] }, @user_filter
               ), :class => "form-control")
             %>
  -          <label for="string_filter" class="nav-header">Filter by keyword</label>
  +          <label for="string_filter" class="add-top-margin nav-header">Filter by keyword</label>
             <%= text_field_tag "string_filter", params[:string_filter], class: "form-control", type: "search" %>
             <input class="add-top-margin btn btn-default" type="submit" value="Filter publications">
           </form>
  +        </div>
         </div>
   
         <div id="publication-list-container" class="col-md-10">
  
positive.code:       </div><!--./col-md-10 -->
  
      </div><!--./row -->
    </div><!--./col-md-12 -->
  </div><!--./row -->
  
  <% content_for :page_title, "Search by user" %>
  
negative.code:     <div class="page-title">
        <h1>Search by user: <%= @user %></h1>
      </div>
  
      <div class="row">
        <div class="col-md-2">
          <div class="well sidebar-nav">
          <form method="GET" action="" class="user-filter-form nav nav-list">
            <label for="user_filter" class="nav-header">Filter by user</label>
            <%=
  