.message-list-scrollbar::-webkit-scrollbar{width:8px}.message-list-scrollbar::-webkit-scrollbar-track{background:#1a1a1a}.message-list-scrollbar::-webkit-scrollbar-thumb{background:#888;border-radius:4px}.message-list-scrollbar::-webkit-scrollbar-thumb:hover{background:#555}.message-item:hover{background-color:#2a2a2a}