Update app.py

app.py

@@ -5,6 +5,18 @@ from html2image import Html2Image
 hti = Html2Image()
 client = InferenceClient("mistralai/Mixtral-8x7B-Instruct-v0.1")
 
+css="""
+.user_chat{
+background:green;
+}
+.bot_chat{
+background:blue;
+}
+.chat_card{
+background:red;
+border-radius:15px;
+}
+"""
 
 html_user="""
 <div class="user_chat">