try setting the height automatically

app.py

@@ -86,5 +86,5 @@ AgGrid(
     data = top_coexp_hits,
     gridOptions = grid_option_builder.build(),
     fit_columns_on_grid_load=True,
-    height = (1 + len(top_coexp_hits.index)) * 29,
+    height = 'autoHeight',
     theme="streamlit")