Update app.py

app.py

@@ -448,7 +448,8 @@ with gr.Blocks(theme=Soft(font=[gr.themes.GoogleFont("Source Sans Pro"), "Arial"
             gr.Markdown("## Log in", padding=True)
             user_id_input = gr.Textbox(
                 label="Enter your unique annotator ID to begin",
-                placeholder="Annotator ID"
+                placeholder="Annotator ID",
+                container=False
             )
         with gr.Row():
             login_btn = gr.Button("Login", variant="primary", scale=0.2, min_width=100)