#header{height:105px}.buy{position:fixed;left:3%;top:70%;display:block;width:90px;height:90px;padding:1em 0;text-align:center;border:6px solid #5bb2e4;background:#2399dd;color:#fff;text-decoration:none;border-radius:50%;transition:.3s;box-sizing:border-box}.buy:hover{background:#39a3e0;border:6px solid transparent}.feature-all{margin:0 auto 50px}.feature-all .banner{width:100%}.feature-all .feature-grid{margin-top:50px;font-size:14px;color:#555}.feature-all .feature-grid .tab-nav{display:-ms-flexbox;display:flex;-ms-flex-pack:justify;justify-content:space-between;padding:0;margin:0 0 75px;background:#efefef;list-style:none;border-radius:50px}.feature-all .feature-grid .tab-nav li{position:relative;width:25%;padding:20px;color:#2399dd;text-align:center;font-weight:600;border-radius:50px;cursor:pointer}.feature-all .feature-grid .tab-nav li img{display:none}.feature-all .feature-grid .tab-nav li.active,.feature-all .feature-grid .tab-nav li:hover{background:#2399dd;color:#fff}.feature-all .feature-grid .tab-nav li.active:after,.feature-all .feature-grid .tab-nav li:hover:after{content:"";position:absolute;bottom:-65px;left:calc(50% - 40px);width:0;height:0;border-left:40px solid transparent;border-right:40px solid transparent;border-top:65px solid #2399dd}.feature-all .feature-grid .tab-nav li.active img,.feature-all .feature-grid .tab-nav li:hover img{position:absolute;bottom:-30px;left:calc(50% - 12px);display:inline;z-index:9}.feature-all .tab-panel{display:none}.feature-all .tab-panel.active{display:-ms-flexbox;display:flex}.feature-all .table{text-align:center}.feature-all .table .table-header{background:#0680c5}.feature-all .table .table-header th{color:#fff}.feature-all .table td .iconfont{color:#2399dd}@media screen and (max-width:979px){.buy{position:relative;top:25px}}