body,html{margin:0;padding:0;width:100%;height:100%}#app{height:100vh;width:100vw;box-sizing:border-box;font-family:DIN,PingFang SC,Helvetica Neue,Helvetica,Hiragino Sans GB,Microsoft YaHei,微软雅黑,Arial,sans-serif}.container{height:100%;width:100%;display:flex}.center{align-items:center;justify-content:center}.row{flex-direction:row}.col{flex-direction:column}.pointer{cursor:pointer}