Update app.py

app.py

@@ -164,9 +164,9 @@ def display_iframe():
 def display_iframe2():
     return iframe2
 
-theme = gr.themes.Monochrome(
-    primary_hue="#e3e9da",
-    secondary_hue="#f8f1ea",
+theme = gr.themes.Default(
+    primary_hue="neutral",
+    secondary_hue="blue",
 ).set(
     background_fill_primary="#e3e9da",
     background_fill_primary_dark="#e3e9da",