Fixed the sidebar layout issue in the discussion page

sass/_discussion.scss

@@ -59,14 +59,10 @@ body.askbot {
     }
   }
 
-  .content-wrapper {
-    @extend .clearfix;
-    @extend .wrapper;
-    @include box-shadow(0 1px 0 #fff);
-    @include box-sizing(border-box);
-    background: #fff;
-    border: 1px solid #ccc;
-    border-top: 0;
+  .main-content {
+    .discussion-wrapper {
+      display: table;
+      width: 100%;
 
       .discussion-content {
         /*@extend .content;*/
@@ -100,6 +96,7 @@ body.askbot {
         }
       }
     }
+  }
 
   footer {
     margin: 0 auto;