Update app.py

app.py

@@ -140,9 +140,9 @@ body {
 }
 """
 
-# Build the custom Blocks interface using gr.Box instead of gr.Container
+# Build the custom Blocks interface using gr.Column as our container.
 with gr.Blocks(css=custom_css) as demo:
-    with gr.Box(elem_classes=["container"]):
+    with gr.Column(elem_classes=["container"]):
         # Header with a dental icon in the title
         with gr.Column(elem_classes=["header"]):
             gr.Markdown("## 🦷 Advanced Dental Terminology Chatbot")