diff --git a/assets/css/app.scss b/assets/css/app.scss
index 07ccf59..5fcf9d5 100644
--- a/assets/css/app.scss
+++ b/assets/css/app.scss
@@ -907,6 +907,12 @@ $links: (
         border-radius: 0;
     }
 
+    .body pre {
+        &.with-title {
+            border: 3px solid #000;
+        }
+    }
+
     .mesh {
         border-color: #86899f;