*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0;height:100%;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;background:#f5f7fa;color:#2c3e50}button,input{font-family:inherit}