Update app.py

app.py

@@ -30,7 +30,18 @@ with gr.Blocks() as demo:
         
     with gr.Column(visible=False) as results_page:
         output_table = gr.Dataframe(label="Matching Trials", interactive=False)
+
+    back_btn = gr.Button("Back")
+
+    def go_back():
+        return gr.update(visible=True), gr.update(visible=False)
     
+    back_btn.click(
+        fn=go_back,
+        inputs=[],
+        outputs=[input_page, results_page]
+    )
+
     def show_results(age, sex, state, keywords):
         results = run_search(age, sex, state, keywords)
         return results, gr.update(visible=False), gr.update(visible=True)