Update app.py

app.py

@@ -218,7 +218,7 @@ def quiz_app():
                 background_color = "#FFF"      # White background for light mode
             
             st.metric(label=f"**Final Score**", value=f"{correct_count} out of {len(st.session_state.quiz_data)}", delta=f"{percentage_correct:.0f}%", delta_color="off")
-            style_metric_cards(border_left_color=border_color, background_color=DEFAULT_BACKGROUND_COLOR)
+            style_metric_cards(border_left_color=border_color, background_color="DEFAULT_BACKGROUND_COLOR")
             
             # st.markdown(f"### Final Score: {correct_count} out of {len(st.session_state.quiz_data)} correct ({percentage_correct:.2f}%)")
             st.session_state.score = correct_count # Store score in session state