Fix responsiveness in Message view

flaskbb/templates/message/message_layout.html

@@ -9,7 +9,7 @@
 </ol>
 
 <div class="row">
-    <div class="col-sm-2">
+    <div class="col-sm-3 col-md-2">
         <div class="sidebar">
             <ul class="nav sidenav">
                 <div class="sidenav-btn">
@@ -22,7 +22,7 @@
             </ul>
         </div><!--/.sidebar -->
     </div><!--/.col-sm-3 -->
-    <div class="col-sm-10">
+    <div class="col-sm-9 col-md-10">
         {% block message_content %}{% endblock %}
     </div><!--/.col-sm-9 -->
 </div><!--/.row -->