Optimized embedded tutorial for mobile

Change-Id: I0b345c75cbd68bd1f1205a313ddbb7ecd94b58c3
diff --git a/templates/partial/header.html.ep b/templates/partial/header.html.ep
index a81aebc..7deae57 100644
--- a/templates/partial/header.html.ep
+++ b/templates/partial/header.html.ep
@@ -33,5 +33,6 @@
       <label for="q-cutoff-field" title="<%= loc('glimpse_desc') %>"><span></span><%= loc('glimpse') %></label>
       <%= link_to 'doc_start', title => loc('tutorial'), class => "tutorial", id => "view-tutorial", tabindex => '-1', begin %><span><%= loc 'tutorial' %></span><% end %>
     </div>
+    <div class="clear"></div>
   </form>
 </header>