Update app.py

app.py

@@ -486,11 +486,13 @@ if 'data' in st.session_state:
     st.sidebar.header("Moving Average Methods")
     
     # SMA with tooltip
-    use_sma = st.sidebar.checkbox(
-        'Simple Moving Average (SMA)', 
-        value=st.session_state.get('use_sma', False),
-        help="Select to apply Simple Moving Average (SMA) to the stock price."
-    )
+    with st.sidebar.expander("Simple Moving Average", expanded=False):
+        use_sma = st.checkbox(
+            'Simple Moving Average (SMA)', 
+            value=st.session_state.get('use_sma', False),
+            help="Select to apply Simple Moving Average (SMA) to the stock price."
+        )
+        
     sma_period = st.sidebar.number_input(
         'SMA Period', 
         min_value=1,