Update app.py

app.py

@@ -689,8 +689,8 @@ def show_field(f: Field, index: int, data_collected):
 
             case 'expander':
                 # Markdown header above; expander label is plain text (blank)
-                st.markdown(f.title)
                 with st.expander(""):
+                    st.markdown(f.title)
                     for child in (f.children or []):
                         show_field(child, index, data_collected)