Update app.py

app.py

@@ -20,7 +20,7 @@ demo = gr.Interface(
     inputs=gr.Textbox(label="Insert jargon here (ask a question):", placeholder="E.g. What are gas fees?"),
     outputs=gr.Textbox(label="Get a simple answer in return:"),
 css="""
-        .input_textbox, .output_textbox {  /* Target both input and output textboxes */
+        .input_text, .output_text {  /* Target both input and output textboxes */
             color: white;
             background-color: #2c2c2c; /* Add background color */
             font-family: 'Arial', sans-serif; /* Change the font */