/*20221123 pgtv*/
.bt {  background: url("../images/btbg.png") no-repeat bottom center;  }
.subnav a.active{ background: #0099ff !important; color: #fff !important;}
.subcon .tabbox{ display:none;}
.subcon .active{ display: block;}

.about{ width: 45%; margin: 0 0 0  50%;}
.footer{ background: #333; color: #999 !important;}
.footer a{ color: #999;}

.jumbotron a{ color: #fff;}
.jumbotron:after{ content: ''; position: absolute; top:0; left:0; width: 100%; height: 100%; z-index: 0; background: rgba(0,0,0,0.2);}
.jumbotron .container{ z-index: 99;}

.imgs img{ max-width: 100%;}
/*768以下*/
@media only screen and (max-width: 768px) {
    .about{ width: 90%; margin: 0 5%;}
    .sildenav{ display: flex; flex-wrap: nowrap; overflow: auto; margin-bottom: 1rem; border-bottom: 1px #eee solid;}
    .sildenav div a{ border: 0 !important;}
}