Update app.py

app.py

@@ -116,12 +116,12 @@ instruction = """
 
 css = """
 @media (prefers-color-scheme: dark) {
-    .gradio-textbox {
+    [data-testid='textbox'] {
         color: white !important;
     }
 }
 @media (prefers-color-scheme: light) {
-    .gradio-textbox {
+    [data-testid='textbox'] {
         color: black !important;
     }
 }