Update app.py

app.py

@@ -67,8 +67,8 @@ with gr.Blocks(css=css) as demo:
         with gr.Row():
             width = gr.Slider(label="Width", minimum=1024, maximum=2048, step=8, value=1024, interactive=True)
             height = gr.Slider(label="Height", minimum=1024, maximum=2048, step=8, value=1024, interactive=True)
-    with gr.Row()
-        gallery = gr.Gallery(show_label=False, rows=1, columns=1)
+    with gr.Row():
+        gallery = gr.Gallery(show_label=False, rows=1, columns=1, allow_preview=True, preview=True)
 
     button.click(gen, inputs=[prompt, negative, width, height], outputs=gallery)