diff --git a/chatdesk-ui/components/chat/chat-messages.tsx b/chatdesk-ui/components/chat/chat-messages.tsx
index a2402e1..fd992ec 100644
--- a/chatdesk-ui/components/chat/chat-messages.tsx
+++ b/chatdesk-ui/components/chat/chat-messages.tsx
@@ -75,7 +75,7 @@ export const ChatMessages: FC<ChatMessagesProps> = ({}) => {
     // 3. 给外层 div 加上 overflow-auto，并且要有高度限制
     <div
       ref={containerRef}
-      className="flex-1 overflow-auto px-4"
+      className="w-full h-screen overflow-auto"
       style={{ maxHeight: "100vh" }}
     >
       {sorted.map((chatMessage, index, array) => {