.chat-history-container{max-height:60vh;overflow-y:auto}.chat-history-container::-webkit-scrollbar{width:8px}.chat-history-container::-webkit-scrollbar-track{background-color:#f5f5f5}.chat-history-container::-webkit-scrollbar-thumb{background-color:#888;border-radius:10px}.chat-history-container::-webkit-scrollbar-thumb:hover{background-color:#555}