modifying depreciated code

src/streamlit_app.py

@@ -124,7 +124,8 @@ if submitted and story.strip():
         img.save(card_path)
         with open(card_path, "rb") as f:
             st.download_button("Download Story Card", f, file_name=card_filename)
-        st.image(card_path, caption="Your Story Card", use_column_width=True)
+        st.image(card_path, caption="Your Story Card", use_container_width=True)
+
         st.success("Story card generated!")
     except Exception as e:
         st.error(f"Story card generation failed: {e}")