fix 1Col layout

ot_templating/Resources/Private/Layouts/1Col.html

@@ -7,10 +7,12 @@
 <div class="main">
 
     <f:comment><!-- Central column --></f:comment>
-    <div class="content">
+    <div class="centralcol">
+        <div class="content">
 
-        <f:comment><!-- render the content of the content section (middle column) --></f:comment>
-        <f:render section="Content" />
+            <f:comment><!-- render the content of the content section (middle column) --></f:comment>
+            <f:render section="Content" />
+        </div>
     </div>
 
 </div> <!-- /container -->