Update button

app.py

@@ -43,7 +43,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
     with gr.Row():
         with gr.Column():
             text_input = gr.Textbox(lines=2, label="Addresses to geocode (one row per address)")
-            geocode_button = gr.Button()
+            geocode_button = gr.Button(variant='primary')
         json_output = gr.JSON(label="Output JSON data")
     geocode_button.click(fn=geocode, inputs=text_input, outputs=json_output, api_name="whereabouts_geocoder")
 demo.launch()