*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;background:#f5f6fa;color:#2c3e50}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#bbb;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#888}