Update app.py

app.py

@@ -29,6 +29,12 @@ st.write(
         text-align: center;
         color: #17becf;
     }
+    .sticky-sidebar {
+        position: -webkit-sticky;
+        position: sticky;
+        top: 0;
+    }
+    </style>
 """,
     unsafe_allow_html=True,
 )