Update app.py

app.py

@@ -336,14 +336,14 @@ def main():
     s1, s2, s3 = st.columns([1, 1, 1])
     
     with s1:
-        if st.button(choice1):
+        if st.button(choice1, use_container_width=True):
             user_input = choice1
         
     with s2:
-         if st.button(choice2):
+         if st.button(choice2, use_container_width=True):
             user_input = choice2
     with s3:
-        if st.button(choice3):
+        if st.button(choice3, use_container_width=True):
             user_input = choice3
         
     if user_input: