#app{min-width:1200px}*{box-sizing:border-box}.w{width:1200px;margin:0 auto;height:100%}a{color:#666;text-decoration:none}body,button,input,textarea{margin:0;padding:0;font-family:PingFang SC Medium,PingFang SC Medium-Medium}li,ol,ul{list-style:none;margin:0;padding:0}button{outline:none;border:none;background:none}h1,h2,h3,h4,h5{margin:0}.fl{float:left}.fr{float:right}.tac{text-align:center}.pr{position:relative}.clearfix:after,.clearfix:before{content:"";display:table}.clearfix:after{clear:both}.clearfix{*zoom:1}input::-webkit-inner-spin-button,input::-webkit-outer-spin-button{-webkit-appearance:none}input[type=number]{-moz-appearance:textfield}