diff --git a/actionpack/lib/action_dispatch/middleware/templates/routes/_table.html.erb b/actionpack/lib/action_dispatch/middleware/templates/routes/_table.html.erb
index 6ffa242da4f75b6dd833657fd44f88de93bc2abf..5cee0b59327ffcb39abe8c9e07422a6974a25b74 100644
--- a/actionpack/lib/action_dispatch/middleware/templates/routes/_table.html.erb
+++ b/actionpack/lib/action_dispatch/middleware/templates/routes/_table.html.erb
@@ -1,6 +1,6 @@
 <% content_for :style do %>
   #route_table {
-    margin: 0 auto 0;
+    margin: 0;
     border-collapse: collapse;
   }