fix 1Col template central column width

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

@@ -7,7 +7,7 @@
 <div class="main">
 
     <f:comment><!-- Central column --></f:comment>
-    <div class="centralcol">
+    <div class="centralcol" style="max-width: 100%;">
         <div class="content">
 
             <f:comment><!-- render the content of the content section (middle column) --></f:comment>