Update app.py

app.py

@@ -396,8 +396,8 @@ async def unified_chat_handler(message, history, session_id, current_img_path):
 custom_css = """
 /* 1. Global Margin Setting */
 #main_container {
-    margin-left: 20% !important;
-    margin-right: 20% !important;
+    margin-left: 10% !important;
+    margin-right: 10% !important;
     width: auto !important;
 }