fix login button bug

app.py

@@ -211,7 +211,10 @@ What do you want to learn ?
 
 
 with gr.Blocks(title=f"{demo_name}", css=css, theme=theme) as demo:
-    gr.LoginButton()
+    with gr.Row():
+        with gr.Column(scale=1):
+            gr.LoginButton()
+
     with gr.Column() as bloc_1:
         textbox_1 = gr.Textbox("You are not logged to Hugging Face !", show_label=False)