Update app.py

app.py

@@ -256,7 +256,14 @@ def sysml_chatbot(message, history):
         return answer, history
 
 # Gradio UI
-with gr.Blocks() as demo:
+with gr.Blocks(css="""
+    #submit-btn {
+        height: 100%;
+        background-color: #48CAE4;
+        color: white;
+        font-size: 1.5em;
+    }
+""") as demo:
     
     gr.Markdown("## SysModeler Chatbot")
 
@@ -270,14 +277,14 @@ with gr.Blocks() as demo:
                 show_label=False
             )
         with gr.Column(scale=1, min_width=50):
-            submit_btn = gr.Button("➤")
+            submit_btn = gr.Button("➤", scale=1, elem_id="submit-btn")
 
     clear = gr.Button("Clear")
 
     state = gr.State(history)
 
-    submit_btn.click(fn=sysml_chatbot, inputs=[msg, state], outputs=[msg, chatbot])
-    msg.submit(fn=sysml_chatbot, inputs=[msg, state], outputs=[msg, chatbot])  # still supports enter key
+    submit_btn.click(fn=sysml_chatbot, inputs=[msg, state], outputs=[gr.Textbox.update(value=""), chatbot])
+    msg.submit(fn=sysml_chatbot, inputs=[msg, state], outputs=[gr.Textbox.update(value=""), chatbot])
     clear.click(fn=lambda: ([], ""), inputs=None, outputs=[chatbot, msg])
 
 if __name__ == "__main__":