update gradio, support multiple resp in api

Former-commit-id: a34263e7c0e07a080276d164cdab9f12f1d767d2

src/llmtuner/webui/css.py

@@ -6,10 +6,10 @@ CSS = r"""
   transform: translate(-50%, -50%); /* center horizontally */
   max-width: 1000px;
   max-height: 750px;
-  overflow-y: scroll !important;
   background-color: var(--input-background-fill);
   border: 2px solid black !important;
   z-index: 1000;
+  padding: 10px;
 }
 
 .dark .modal-box {