Update app.py

app.py

@@ -102,6 +102,10 @@ CSS ="""
 #textbox { flex-grow: 1; overflow: auto; resize: vertical;}
 .secondary {background-color: #6366f1; }
 #full-width-button { width: 100%; }
+.gr-textbox input[type="text"] {
+    background-color: black;
+    color: white;
+}
 #search-result { overflow-y: auto !important; font-size:18px !important; font-weight:500 !important; background-color: black !important; color: white !important;}
 #question-box { font-size:18px !important; font-weight:500 !important; }
 """