.online-nav-row{
    padding: 16px 0 5px;
    width: 1200px;
    margin: 0 auto;
}
.online-nav-row span{
    font-size: 24px;
    font-family: SIMLI,"Segoe UI", "Lucida Grande", Helvetica, Arial, "Microsoft YaHei", FreeSans, Arimo, "Droid Sans", "wenquanyi micro hei", "Hiragino Sans GB", "Hiragino Sans GB W3", "FontAwesome", sans-serif;
    padding-right: 30px;
}
.online-nav-row span:first-child{
    padding-right: 0;
}
.sziti{
    font-size: 24px;
    font-family: SIMLI,"Segoe UI", "Lucida Grande", Helvetica, Arial, "Microsoft YaHei", FreeSans, Arimo, "Droid Sans", "wenquanyi micro hei", "Hiragino Sans GB", "Hiragino Sans GB W3", "FontAwesome", sans-serif;
}
.sebu1{
    float: right;
    background-image: url(../img/seachbutton.png);
    background-repeat: no-repeat;
    width: 120px;
    border: none;
    height: 90%;
    text-align: center;
    color: white;
    cursor: pointer;
    margin-top: 7px;
    margin-right: 30px;
    line-height: 40px;
}
.courseimport ul li.on-li{
    float: left;
    width: 284px;
    /*height: 276px;*/
    margin: 10px 9px 20px;
    padding: 0;
     border: 1px solid #cccccc;
    cursor: pointer;
    border-radius: 6px;
    background: #fbfbfb;
}
.courseimport ul li.on-li .banspan {
    position: absolute;
    text-align: center;
    width: 60%;
    left: 15%;
    top: 40%;
    font-size: 22px;
    cursor: pointer;
}
.courseimport ul li.on-li .on-list{
    width: 285px;
    height: 214px;
}
.courseimport ul li.on-li .on-list img{
    height: 100%;
    width: 100%;
}
.courseimport ul li.on-li .on-list-div{
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: auto;
}
.courseimport ul li.on-li .on-list-div img{
    left: 0;
    top: 0;
}
.courseimport ul li.on-li .on-list .online-banspan{
    z-index: 2;
    width: 60%;
    font-size: 25px;
    display: inline-block;
    text-align: center;
}
li.on-li .onbkname{
    width: 100%;
    display: inline-block;
    /*text-indent: 10px;*/
    text-align: center;
    font-size: 24px;
    margin: 16px 0;
}
.courseimport ul li.on-li .on-info{
    padding-left: 10px;
}
.courseimport ul li.on-li .on-info .renshu{
    width: 75px;
    height: 22px;
    line-height: 22px;
    padding-left: 21px;
    display: inline-block;
    background: url(../img/online/zan.png) no-repeat;
}
.courseimport ul li.on-li .on-info .comment{
    width: 75px;
    height: 22px;
    line-height: 22px;
    padding-left: 21px;
    display: inline-block;
    background: url(../img/online/zan.png) no-repeat;
}
.courseimport ul li.on-li .on-info .zan{
    width: 75px;
    height: 22px;
    line-height: 22px;
    padding-left: 21px;
    display: inline-block;
    background: url(../img/online/zan.png) no-repeat;
}
.courseimport ul li.on-li:nth-child(n+5){
    display: none;
}
.courseimport ul li.on-li .item-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 214px;
    transition: all .3s ease-out;
    opacity: 0;
    background: #000;
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
    filter: alpha(opacity=0);
    z-index: 3;
}
.courseimport ul li.on-li .btn-link__hover_i {
    opacity: 0;
    filter: alpha(opacity=0);
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin: -60px 0 0 -25px;
    background: url(../img/online/play.png) no-repeat;
    transform: scale(2);
    backface-visibility: hidden;
    transition: all ease-out 250ms;
    z-index: 3;
}
.courseimport ul li.on-li:hover .item-mask {
    opacity: .5;
    background: #000;
    filter: alpha(opacity=50);
    z-index: 3;
}
.courseimport ul li.on-li:hover .btn-link__hover_i {
    opacity: 1;
    filter: alpha(opacity=100);
    transform: scale(1);
    z-index: 3;
}
.courseimport ul li.on-li .online-state{
    position: absolute;
    right:10px;
    top: 10px;
    border-radius: 5px;
    padding: 5px 10px;
    background-color:rgba(0,0,0,0.5);
    color: #FFFFFF;
    font-size: 12px;
}