@media (max-width:768px){
    .filtration .select{
        margin: 14px 0;
    }
    .filtration .select .option{
        margin-bottom: 6px;
        font-size: 14px;
        line-height: 18px;
        color: #C91605;;
    }
    .filtration .select .filtrate{
        margin: 0 14px 0 6px;
        width: 18px;
        height: 18px;
    }
    .filtration .mask{
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0,0,0,0);
        z-index: 9999;
    }
    .filtration .mask .half{
        overflow-y: auto;
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        width:300px;
        height: 100vh;
        background: rgba(0,0,0,0.5);
    }
    .filtration .search{
        padding: 20px 0 0;
        margin: auto;
        width: 252px;
    }
    .filtration .search input{
        padding: 0 20px;
        width: 150px;
        height: 36px;
        background: transparent;
        border: 1px solid #C91605;
        border-radius: 5px 0 0 5px;
        color: #fff;
    }
    .filtration .search input::input-placeholder{
        color:#fff;
    }
    .filtration .search input::-webkit-input-placeholder{
        color:#fff;
    }
    .filtration .search input::-o-placeholder{
        color:#fff;
    }
    .filtration .search button{
        width: 60px;
        height: 38px;
        border: 1px solid #C91605;
        background: #C91605;
        border-radius: 0 5px 5px 0;
        cursor: pointer;
        font-size: 16px;
        color: #fff;
        line-height: 38px;
    }
    .filtration .mask .project{
        padding: 24px 0 18px;
        font-size: 16px;
        line-height: 16px;
        color: #fff;
        text-align: center;
    }
    .filtration .mask .marginTop{
        padding-top: 10px;
    }
    .filtration .mask .ul{
        margin: auto;
        padding: 0 8px;
    }
    .filtration .mask .ul li{
        float: left;
        margin-bottom: 24px;
        padding: 0 12px;
        height: 32px;
        background: #ddd;
        text-align: center;
        font-size: 15px;
        line-height: 32px;
        border-radius: 5px;
        color: #333;
    }
    .filtration .mask .ul li{
        margin: 0 8px 20px;
    }
    .filtration .mask .ul li.on{
        background: #C91605;
        color: #fff;
    }
    .filtration .mask .btns{
        display: flex;
        padding: 10px 0 16px;
    }
    .filtration .mask .btn{
        margin: 8px auto 0;
        padding: 0;
        width: 100px;
        height: 32px;
        border: none;
        text-align: center;
        font-size: 15px;
        line-height:  32px;
        border-radius: 5px;
    }
    .filtration .mask .sure{
        background: #C91605;
        color: #fff;
    }
    .filtration .mask .close{
        background: #ddd;
        color: #333;
    }
    .el-popper{
        z-index: 999999!important;
    }
    .el-cascader{
        display: block;
        margin: auto;
        width: 217px;
    }

    .course{
        width: 340px;
        margin: auto;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }
    .course .li{

    }
    .course.clearfix:before, .course.clearfix:after {
        display:table;
        content:none;
        clear: both;
    }
    .course .li .cover{
        position: relative;
        width: 157px;
        height: 204px;
        box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.25);
    }
    .course .li .cover img {
        width: 100%;
        height: 100%;
    }
    .course .li .cover .badgeLef{
        position: absolute;
        left: 0;
        right: 0;
        margin: auto;
        bottom: 64px;
        width: 100px;
        height: 28px;
        background: rgba(0,0,0,0.6);
        border-radius: 18px;
        font-size: 13px;
        color: #fff;
        line-height: 28px;
        text-align: center;
    }
    .course .li .cover .badgeRig {
        position: absolute;
        left: 0;
        right: 0;
        margin: auto;
        bottom: 20px;
        width: 50px;
        height: 28px;
        background: rgba(0,0,0,0.6);
        border-radius: 18px;
        font-size: 13px;
        color: #fff;
        line-height: 28px;
        text-align: center;
    }
    .course .li .name {
        overflow: hidden;
        margin: 8px 0 4px;
        padding: 0 10px;
        width: 137px;
        white-space: nowrap;
        text-overflow: ellipsis;
        font-size: 14px;
        color: #000000;
        line-height: 20px;
        text-align: center;
    }
    .course .li .describe {
        overflow: hidden;
        margin: 4px 0 12px;
        padding: 0 10px;
        width: 137px;
        white-space: nowrap;
        text-overflow: ellipsis;
        font-size: 13px;
        color: #C91605;
        line-height: 20px;
        text-align: center;
    }
    #demo-laypage-pn-show{
        margin: auto;
        width: 175px;
    }
}


@media (min-width: 992px) and (max-width: 1920px) {
    .filtration{
        margin: 40px auto 20px;
        padding: 30px 20px;
        box-sizing: border-box;
        background: #F8F8F8;
    }
    .filtration .myCate{
        display: flex;
        width: 100%;
    }
    .filtration .myCate .val{
        display: flex;
        flex: 1;
        flex-wrap: wrap;
        align-items: center;
    }
    .filtration .certify{
        display: flex;
        width: 100%;
    }
    .filtration .certify .val{
        display: flex;
        flex: 1;
        flex-wrap: wrap;
        align-items: center;
    }
    .filtration .price{
        display: flex;
        width: 100%;
    }
    .filtration .price .val{
        display: flex;
        flex: 1;
        flex-wrap: wrap;
        align-items: center;
    }
    .filtration .time{
        display: flex;
        width: 100%;
    }
    .filtration .time .val{
        display: flex;
        flex: 1;
        flex-wrap: wrap;
        align-items: center;
    }
    .filtration .subject{
        display: flex;
        width: 100%;
    }
    .filtration .subject .val{
        display: flex;
        flex: 1;
        flex-wrap: wrap;
        align-items: center;
    }
    .filtration .theme{
        display: flex;
        margin-bottom: 24px!important;
        width: 100%;
    }
    .filtration .theme .val{
        display: flex;
        flex: 1;
        flex-wrap: wrap;
        align-items: center;
    }
    .filtration .el-cascader{
        margin-left: 12px;
    }
    .filtration .lable{
        width: 80px;
        font-size: 16px;
        line-height: 36px;
        color: #121212;
    }
    .filtration .val{
        font-size: 16px;
        color: #666;
    }
    .filtration .val .on{
        padding:0 24px;
        height: 36px;
        background: #C91605;
        border-radius: 18px;
        color: #fff;
        line-height: 36px;
    }
    .filtration .li{
        margin: 0 12px;
        cursor: pointer;
    }
    .filtration .line{
        margin-bottom: 12px;
    }
    .filtration .retrieve input{
        padding: 0 20px;
        width: 400px;
        height: 46px;
        background: #FFFFFF;
        border: 1px solid #C91605;
        border-radius: 5px 0 0 5px;
    }
    .filtration .retrieve button{
        width: 160px;
        height: 48px;
        border: 1px solid #C91605;
        background: #C91605;
        border-radius: 0 5px 5px 0;
        cursor: pointer;
        font-size: 18px;
        color: #fff;
        line-height: 48px;
    }
    .filtration .retrieve .total{
        font-size: 20px;
        color: #000000;
        line-height: 48px;
    }
    .filtration .retrieve .total .red{
        margin-left: 16px;
        color: #C91605;
    }
    .course .li{
        float: left;
        margin-left: 26px;
        width: 219px;
    }
    .course .li:nth-child(5n+1){
        margin-left:0;
    }
    .course .li .cover{
        position: relative;
        width: 219px;
        height: 260px;
        box-shadow: 0px 0px 10px 0px rgba(0,0,0,0.25);
    }
    .course .li .cover img{
        width: 100%;
        height: 100%;
    }
    .course .li .cover .badgeLef{
       position: absolute;
       left: 20px;
       bottom: 20px;
       width: 90px;
        height: 26px;
        background: rgba(0,0,0,0.6);
        border-radius: 12px;
        font-size: 12px;
        color: #fff;
        line-height: 26px;
        text-align: center;
    }
    .course .li .cover .badgeRig{
        position: absolute;
       right: 20px;
       bottom: 20px;
       width: 50px;
        height: 26px;
        background: rgba(0,0,0,0.6);
        border-radius: 12px;
        font-size: 12px;
        color: #fff;
        line-height: 26px;
        text-align: center;
    }
    .course .li .name{
        overflow: hidden;
        margin: 15px 0 12px;
        padding: 0 10px;
        width: 190px;
        white-space: nowrap;
        text-overflow: ellipsis;
        font-size: 20px;
        color: #000000;
        line-height: 20px;
        text-align: center;
    }
    .course .li .describe{
        overflow: hidden;
        margin: 12px 0 30px;
        padding: 0 10px;
        width: 190px;
        white-space: nowrap;
        text-overflow: ellipsis;
        font-size: 18px;
        color: #C91605;
        line-height: 20px;
        text-align: center;
    }
    .page{
       display: flex;
       width: 1200px;
       margin: 2px auto 60px;
       justify-content: flex-end;
    }
}

.header{
    background-image: url("../images/banner5.jpg");
    background-repeat: no-repeat;
    background-size: 100%  100%;
}