Update app.py

app.py

@@ -51,6 +51,9 @@ css="""
     margin: 0 auto;
     max-width: 640px;
 }
+#button{
+    align-self: stretch;
+}
 """
 
 with gr.Blocks(css=css) as demo:
@@ -87,7 +90,7 @@ with gr.Blocks(css=css) as demo:
                 step=0.1,
                 value=5.0, #Replace with defaults that work for your model
             )
-            run_button = gr.Button("Run", scale=0)
+            run_button = gr.Button("Run", scale=0, elem_id="button")
         
         result = gr.Image(label="Result", show_label=False)