.chat-messages{height:100px;overflow-y:auto;border:1px solid #ccc;margin-bottom:10px;padding:10px;background-color:#fff}.message{margin-bottom:10px}.user{text-align:left;background-color:rgba(173,216,230,.5);border-radius:4px;padding:3px}.bot{text-align:left}.error{color:#f00;text-align:center}