body,dd,dl,dt,h1,h2,h3,h4,h5,h6,input,li,ol,p,ul{margin:0;padding:0}*{box-sizing:border-box}body{color:#333;font:16px/1.5 Helvetica Neue,Helvetica,Arial,Microsoft Yahei,Hiragino Sans GB,Heiti SC,WenQuanYi Micro Hei,sans-serif}ol,ul{list-style:none}em,i{font-style:normal}a{color:#333;text-decoration:none}img{vertical-align:middle}input{border:none;color:#333;outline:none}.fl{float:left}.fr{float:right}.clearfix:after,.clearfix:before{content:"";display:table}.clearfix:after{clear:both}#app,body,html{background:#fff;height:100%;width:100%}.container{margin:0 auto;width:1200px}html{scroll-behavior:smooth}