.certificate{padding:30px 0; background:rgb(255,255,255);}
.certificate .list{}
.certificate .list>ul{margin:0 -18px;}
.certificate .list>ul:after{display:block; content:''; clear:both;}
.certificate .list>ul>li{float:left; padding:18px; width:33.3333%;}
.certificate .list>ul>li>a{display:block; background:#fff;}
.certificate .list>ul>li>a>span{display:block; overflow:hidden; border-radius:3px;}
.certificate .list>ul>li>a>span>img{display:block; max-width:100%; transition:.3s;}
.certificate .list>ul>li>a>span:hover>img{transform:scale(1.08);}
.certificate .list>ul>li>a>strong{display:block; padding:8px; font-size:18px; text-align:center; font-weight:normal; position:relative;}
.fixed{position:fixed; top:0; right:0; bottom:0; left:0; overflow:hidden; background:rgba(0,0,0,.8); z-index:9988; visibility:hidden; opacity:0; transition:.38s;}
.fixed>div{position:absolute; top:0; right:0; bottom:0; left:0; background:rgba(0,0,0,.08);}
.fixed.on{visibility:visible; opacity:1;}
.fixed i{position:absolute; z-index:9; top:28px; right:28px; cursor:pointer; transition:.3s;
width:48px; height:48px; line-height:48px; text-align:center; font-size:28px; background:#fff; border-radius:48px;}
.fixed i:hover{background:rgb(17,121,215); color:#fff;}
.fixed img{max-width:90%; max-height:90%; display:block; z-index:8; position:relative;}
.fixed.mouse>span{position:absolute; z-index:9; top:0; right:0; bottom:0; left:0;}
@media(max-width:1199px){
.certificate{padding:38px 0;} 
.certificate .list>ul{margin:0 -8px;}
.certificate .list>ul>li{padding:8px;}
.certificate .list>ul>li>a>strong{padding:8px; font-size:16px;}
.fixed i{top:18px; right:18px; width:38px; height:38px; line-height:38px; font-size:22px;}
}
@media(max-width:767px){
.certificate{padding:18px 0;}
}
@media(max-width:992px){
.certificate .list>ul>li{width:50%;}
}
@media(max-width:767px){
.certificate .list>ul{margin:0 -4px;}
.certificate .list>ul>li{padding:4px;}
.certificate .list>ul>li>a>strong{padding:4px; font-size:14px;}
.fixed i{top:8px; right:8px; width:28px; height:28px; line-height:28px; font-size:18px;}
}