Update demo.py

demo.py

@@ -127,7 +127,7 @@ with gr.Blocks() as demo:
             live_image_input = gr.Image(type='filepath')
             gr.Examples(['live_examples/1.jpg', 'live_examples/2.jpg', 'live_examples/3.jpg', 'live_examples/4.jpg'], 
                         inputs=live_image_input)
-            check_liveness_button = gr.Button("Check Liveness")
+            check_liveness_button = gr.Button("Check Liveness", variant="primary", size="lg")
         with gr.Column():
             liveness_face_output = gr.Image(type="pil").style(height=150)
             livness_result_output = gr.HTML()