refactor: move translate button below both columns

app.py

@@ -113,7 +113,6 @@ def _build_demo() -> gr.Blocks:
                     show_label=False,
                     buttons=["clear"],
                 )
-                translate_btn = gr.Button("Translate", variant="primary")
             with gr.Column():
                 target_language = gr.Dropdown(
                     choices=language_names,
@@ -129,6 +128,8 @@ def _build_demo() -> gr.Blocks:
                     buttons=["copy"],
                 )
 
+        translate_btn = gr.Button("Translate", variant="primary")
+
         translate_btn.click(
             fn=_translate_with_loading,
             inputs=[input_text, target_language],