Update app.py

app.py

@@ -18,10 +18,10 @@ css = """
     border-radius: 6px !important;
     border-color: #343140 !important;
 }
-.user {
+.user.dark {
     background: #1e1c26 !important;
 }
-.assistant, .pending {
+.assistant.dark, .pending.dark {
     background: #16141c !important;
 }
 """
@@ -46,6 +46,7 @@ def respond(
     llm = Llama(
         model_path=f"models/{model}",
         n_gpu_layers=81,
+        n_ctx=8192,
     )
     provider = LlamaCppPythonProvider(llm)