*{margin:0;padding:0}#app{background-color:#222}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#1a1a1a}::-webkit-scrollbar-thumb{background:#666;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#999}*{scrollbar-width:thin;scrollbar-color:#666 #1a1a1a}