Update app.py

app.py

@@ -56,8 +56,13 @@ destination = []
 thresholds = []
 num_faces = 5
 
-with gr.Blocks(theme='victorisgeek/gray')
-    with gr.Row():
+from gradio.themes.utils.theme_dropdown import create_theme_dropdown
+
+dropdown, js = create_theme_dropdown()
+
+with gr.Blocks(theme='victorisgeek/gray') as demo:
+    with gr.Row(equal_height=True):
+        with gr.Column(scale=10):
         gr.Markdown("# Refacer")
     with gr.Row():
         video = gr.Video(label="Original video", format="mp4")