body{margin:0;padding:0;font-feature-settings:"clig" off,"liga" off;font-family:-apple-system,BlinkMacSystemFont,Helvetica Neue,Helvetica,Segoe UI,Arial,Roboto,PingFang SC,miui,Hiragino Sans GB,Microsoft Yahei,sans-serif}button{font-family:-apple-system,BlinkMacSystemFont,Helvetica Neue,Helvetica,Segoe UI,Arial,Roboto,PingFang SC,miui,Hiragino Sans GB,Microsoft Yahei,sans-serif}*{box-sizing:border-box}