#app,body,html{width:100%;height:100%;margin:0}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:#303133;background:#f5f7fa}a{color:inherit;text-decoration:none}