Update app.py

app.py

@@ -44,8 +44,11 @@ def load_data(base_url):
     return df
 
 st.sidebar.title("Filters")
-start_date = st.sidebar.date_input("Start transaction date", value=datetime.date(2025, 1, 1))
-top_n = st.sidebar.slider("Top N stocks", min_value=1, max_value=20, value=5)
+
+with st.sidebar.expander("Parameters", expanded=True):
+    start_date = st.date_input("Start transaction date", value=datetime.date(2025, 1, 1))
+    top_n = st.slider("Top N stocks", min_value=1, max_value=20, value=10, help="Select the top N stock by trade amount and volume.")
+
 run_button = st.sidebar.button("Run")
 
 st.title("Congress Trades Analysis")