Update app.py

app.py

@@ -811,7 +811,7 @@ with st.expander("📈 Detailed Metrics & Confusion Matrix"):
     with col_matrix:
         if st.session_state.cm_plot_cached is None:
             st.session_state.cm_plot_cached = generate_confusion_matrix_plot(model_info["confusion_matrix"])
-        st.image(st.session_state.cm_plot_cached, use_column_width=True)
+        st.image(st.session_state.cm_plot_cached, use_container_width=True)
     
     with col_report:
         st.markdown("**📊 Classification Report:**")