diff --git a/frontend/index.html b/frontend/index.html
index f5663ce..c72c5c3 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -621,7 +621,7 @@
             inset: 0;
             pointer-events: none;
             overflow-y: scroll; /* Match textarea scrollbar space */
-            overflow-x: hidden;
+            overflow-x: auto; /* Match textarea for horizontal scroll sync */
             color: var(--text-primary);
             background-color: var(--bg-primary);
             z-index: 0;