#app{font-family:PingFangSC-Regular;font-size:3.733vw;color:#fff;font-weight:400;line-height:1.5;letter-spacing:0}body,footer,p,div,dl,dt,dd,ul,ol,h1,h2,h3,h4,img,fieldset,table,li,form,legend,input,button{-webkit-box-sizing:border-box;-ms-box-sizing:border-box;box-sizing:border-box;padding:0;margin:0}