diff --git a/sass/main.scss b/sass/main.scss
index 54aa59c..e6cf8d6 100644
--- a/sass/main.scss
+++ b/sass/main.scss
@@ -815,6 +815,10 @@ body.post {
         }
       }
     }
+
+    #outdate_alert.hidden {
+      display: none;
+    }
   }
 
   .mermaid {