.introduc_tab{padding:80px 0;box-sizing:border-box}.introduc_tab ul{display:flex}.introduc_tab ul li{width:200px;height:54px;padding:0 20px;box-sizing:border-box;font-size:16px;color:#333;margin-right:10px;background:#ededed;cursor:pointer}.introduc_tab ul li a{width:100%;height:100%;display:flex;align-items:center;justify-content:space-between}.introduc_tab ul li a span{display:block}.introduc_tab ul li a .desc_img{width:6px;height:10px;background:url(../img/jt1.png) no-repeat;background-size:100%,100%}.introduc_tab ul li.active{background:#0083c9}.introduc_tab ul li.active a{color:#fff}.introduc_tab ul li.active a .desc_img{width:10px;height:6px;background:url(../img/jt2.png) no-repeat!important}