Update app.py

app.py

@@ -81,7 +81,10 @@ if st.session_state.screen == 0:
             if st.button("Proceed", key="Proceed", use_container_width=True):
                 st.session_state.screen = 1 
                 st.rerun()
-        
+
+        # purchase option
+        st.markdown("<a href='https://www.amazon.com/Wheres-Waldo-Ultimate-Watcher-Collection/dp/1536215112/ref=asc_df_1536215112/?tag=hyprod-20&linkCode=df0&hvadid=496186854683&hvpos=&hvnetw=g&hvrand=13774168920524356768&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009670&hvtargid=pla-1185030597547&psc=1&mcid=a517c47662b13f96a80fbf3bfe8b30fe&gclid=CjwKCAjwuJ2xBhA3EiwAMVjkVADBaOb87R0kxhnpKqL-S_gJWme0DJJAwSTe-VlUv2p19zZKak3cshoCR34QAvD_BwE' style='text-align: left; color: black;' a=>Purchase the Books</a>)
+                
         # image of Waldo and his friends
         st.image("/home/user/app/home_page_images/Waldo_Friends.jpg", use_column_width=True)