Adding chat clear button

app.py

@@ -155,9 +155,9 @@ with gr.Blocks(css=css) as demo:
         # with gr.Row():
         # sources = gr.HTML(value = "Source paragraphs where I looked for answers will appear here", height=300)
     with gr.Row():
-        question = gr.Textbox(label="Type your question?",lines=1).style(full_width=False)
+        question = gr.Textbox(label="Type your question !",lines=1).style(full_width=True)
         submit_btn = gr.Button(value="Send message", variant="primary", scale = 1)
-        clean_chat_btn =  gr.Button("✨ Delete all history")
+        clean_chat_btn =  gr.Button("Delete Chat")
 
     with gr.Column():
         with gr.Box():