new css class

app.py

@@ -11,6 +11,7 @@ CSS = """
 .contain { display: flex; flex-direction: column; }
 .gradio-container { height: 100vh !important; }
 .main { height: 100vh !important; }
+.wrap { height: 100vh !important; }
 #component-0 { height: 100% !important; }
 #component-1 { height: 100% !important; }
 #chatbot { flex-grow: 1 !important; overflow: auto;}