Update app.py

app.py

@@ -251,7 +251,7 @@ def user_contact():
         key="user_contact_input"
     )
 
-    if st.button("ادامه"):
+    if st.button("ادامه", key="start_btn", type="primary"):
         st.session_state.user_contact = contact_info  # ذخیره اطلاعات
         st.session_state.current_page = "demographic_form"
         st.rerun()