fix: center sidebar banner on mobile

public/css/style.css

@@ -958,11 +958,6 @@ div.pp_default .pp_close:hover {
   color: #282828;
 }
 
-ins[data-revive-zoneid="2"] {
-  margin: 2rem 0;
-  display: block;
-}
-
 @media (max-width: 768px) {
   .sidebar {
     width: 100%;