#app,body,html{height:100%;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Microsoft YaHei,sans-serif;color:#303133;background:#f5f6fa}*{box-sizing:border-box}.text-muted{color:#909399}