Update app.py

app.py

@@ -121,7 +121,7 @@ elif page == "About":
 
 
 
-tab1, tab2, tab3 = st.tabs(["Verra", "Carbon Credits", "Voluntary Carbon Market"])
+tab1, tab2, tab3, tab4 = st.tabs(["Verra", "Carbon Credits", "Voluntary Carbon Market", "NBS"])
 
 with tab1:
     st.header("Verra")
@@ -131,3 +131,6 @@ with tab2:
 with tab3:
     st.header("Voluntary Carbon Market")
 
+with tab4:
+    st.header("NBS - Natural-based solutions")
+