*{margin:0;padding:0;box-sizing:border-box}html,body,#app,#app-container{width:100%;height:100%;overflow:hidden;background:#000}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:#1a1a1a}::-webkit-scrollbar-thumb{background:#444;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#666}