*{box-sizing:border-box;margin:0;padding:0}html,body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;height:100%;font-family:Helvetica Neue,Helvetica,PingFang SC,Hiragino Sans GB,Microsoft YaHei,微软雅黑,Arial,sans-serif}#app{height:100%}