.myp{overflow:hidden;margin-top:20px}.myp .s{float:left;margin-right:20px}.myrule{height:500px;overflow-y:scroll}.myrule .li{margin-top:10px}.myrule .item{padding:10px;box-sizing:border-box;float:left;width:320px;border:1px solid}.myrule .item .title{font-weight:700;text-align:center;height:42px;padding:5px 0;overflow:hidden}.myrule .item .title .btn{float:right}