Update app.py

app.py

@@ -507,7 +507,7 @@ if st.session_state.app_step == "intro":
         "2) Click **Run Model** to compute metrics and plots. \n"
         "3) **Proceed to Validation** (with actual TOC) or **Proceed to Prediction** (no TOC)."
     )
-      st.subheader("Input Features Used by the Model")
+    st.subheader("Input Features Used by the Model")
     st.markdown("""
     The TOC estimation model uses the following eight well-logging features: