@charset "utf-8";
/* flexslider */
.flexslider{margin:0px auto;position:relative;width:100%;height:auto;overflow:hidden;zoom:1;}
.flex-viewport{max-height:2000px;-webkit-transition:all 1s ease;-moz-transition:all 1s ease;transition:all 1s ease;}
.flexslider .slides{zoom:1;}
.flex-direction-nav a{border-radius:20px;width:60px;height:90px;line-height:99em;overflow:hidden;margin:-60px 0 0;display:block;background:url("https://www.qalib.net/__xh__/mathedu.bnu.edu.cn/images/ad_ctr.png") no-repeat;position:absolute;top:50%;z-index:10;cursor:pointer;opacity:0;filter:alpha(opacity=0);-webkit-transition:all .3s ease;}
.flex-direction-nav .flex-next{background-position:0 -90px;right:0;}
.flex-direction-nav .flex-prev{left:0;}
.flexslider:hover .flex-next{opacity:0.8;filter:alpha(opacity=25);}
.flexslider:hover .flex-prev{opacity:0.8;filter:alpha(opacity=25);}
.flexslider:hover .flex-next:hover, .flexslider:hover .flex-prev:hover{opacity:1;filter:alpha(opacity=50);}
.flex-control-nav{width:100%;position:absolute;bottom:25px;text-align:center;}
.flex-control-nav li{margin:0 5px;display:inline-block;zoom:1;*display:inline;}
.flex-control-paging li a {
    background: #fff;
    display: block;
    height: 13px;
    overflow: hidden;
    text-indent: -99em;
    width: 13px;
    cursor: pointer;
    border-radius: 50%;
}
.flex-control-paging li a.flex-active{background: #274372;}
.slides li .img{
    position: relative;
}
.banner-word {
    display: block;
    height: 200px;
    width: 360px;
    background: rgba(0,0,0,0.6);
    top: 215px;
    right: 10%;
    z-index: 1;
    position: absolute;
}
.p3 {
    width: 315px;
    margin: 0 auto;
    margin-top: 20px;
    font-size: 18px;
    font-weight: bold;
    height: 38px;
    line-height: 38px;
    color: #ffffff;
}
.p-line3 {
    width: 40px;
    height: 4px;
    background: #3760a7;
    display: block;
    margin-top: 2px;
}
.banner-word .ban-p {
    width: 315px;
    height: 100px;
    margin: 0 auto;
    margin-top: 18px;
    text-align: justify;
    font-size: 15px;
    line-height: 20px;
    color: rgb(204,204,204);
    overflow: hidden;
}