Update app.py

app.py

@@ -255,7 +255,7 @@ with gr.Blocks() as demo:
         
         with gr.Row():
             with gr.Column(scale=5):
-                textbox = gr.Textbox(placeholder="🎤 Enter your prompt (up to 200 characters)", lines=2, max_lines=5)
+                textbox = gr.Textbox(placeholder="🎤 Enter your prompt (up to 200 characters)", lines=2, max_lines=5, submit_key="enter")
             submit_btn = gr.Button(value="Submit")
 
         with gr.Row():
@@ -279,14 +279,12 @@ with gr.Blocks() as demo:
         gr.Markdown("## 🗣️ Chat directly with a model!")
         
         with gr.Row():
-            with gr.Column(scale=4):
-                direct_chatbot = gr.Chatbot(label="💬 Direct Chat").style(height=500)
-            with gr.Column(scale=1):
-                model_dropdown = gr.Dropdown(choices=chatbots, label="🤖 Select a model")
+            direct_chatbot = gr.Chatbot(label="💬 Direct Chat").style(height=500)
+            model_dropdown = gr.Dropdown(choices=chatbots, label="🤖 Select a model")
         
         with gr.Row():
             with gr.Column(scale=5):
-                direct_textbox = gr.Textbox(placeholder="💭 Enter your message", lines=2, max_lines=5)
+                direct_textbox = gr.Textbox(placeholder="💭 Enter your message", lines=2, max_lines=5, submit_key="enter")
             direct_submit_btn = gr.Button(value="Submit")
 
         with gr.Row():