.title-top li {
    width: 80px;
    margin-right: 15px;
    background-color: white;
    text-align: center;
    line-height: 30px;
    float: left;
    cursor: pointer;
    font-size: 14px;
}

    .title-top li.selected {
        background-color: #93a3ae;
    }

    .title-top li:hover {
        color: #fff;
        background-color: #93a3ae;
    }

.top-cont {
    clear: both;
    margin: 0 auto;
    width: 1280px;
    height: auto;
    min-height: 600px;
}

.m-course-list {
    padding: 0;
}

div {
    padding: 0;
    margin: 0;
    list-style: none;
    font-style: normal;
    text-decoration: none;
    border: 0;
    font-family: Helvetica Neue,Helvetica,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Arial,sans-serif;
    font-weight: 400;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

.container {
    width: 1200px;
    position: relative;
    margin: 0 auto;
}

.m-card-list {
    margin-left: -32px;
    overflow: hidden;
}

    .m-card-list li .course-panel {
        display: block;
        width: 276px;
        height: 268px;
        position: relative;
        margin-left: 32px;
        overflow: hidden;
        opacity: 0.9;
        filter: Alpha(opacity=90);
    }
        .m-card-list li .course-panel:hover {
            opacity: 1;
            filter: Alpha(opacity=100);
        }
        a {
            color: #2f3440;
        }

.m-card-list li .course-panel .course-img {
    position: relative;
    display: block;
    padding: 0;
    width: 100%;
    height: 150px;
    border-radius: 4px;
    overflow: hidden;
    margin: 0 auto;
}

    .m-card-list li .course-panel .course-img img {
        width: 100%;
        height: 100%;
        -webkit-transition: all .2s ease-in-out;
        transition: all .2s ease-in-out;
    }

.m-card-list li .course-panel .course-name {
    display: block;
    width: 100%;
    color: #2f3440;
    margin: 0 auto;
    padding: 10px 0;
    text-align: left;
    font-size: 16px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
}

.m-card-list li .course-panel .course-attr {
    position: relative;
    width: 100%;
    min-height: 18px;
    margin-bottom: 5px;
    color: #8e95a4;
    text-align: left;
    font-size: 12px;
}

.f-fr {
    float: right !important;
}

.m-card-list li .course-panel .course-attr {
    position: relative;
    width: 100%;
    min-height: 18px;
    margin-bottom: 5px;
    color: #8e95a4;
    text-align: left;
    font-size: 12px;
}

.el-rate {
    height: 20px;
    line-height: 1;
    color: #FF9900;
    width: 170px;
    float: left;
}

.m-card-list li .course-panel .course-attr {
    position: relative;
    width: 100%;
    min-height: 18px;
    margin-bottom: 5px;
    color: #8e95a4;
    text-align: left;
    font-size: 12px;
}

    .m-card-list li .course-panel .course-attr .course-price.free {
        color: #00be6e;
        font-size: 20px;
    }

.m-card-list li {
    display: block;
    float: left;
    margin-bottom: 40px;
}



.m-pagination-wrapper {
    margin: 0 auto;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.g-course-list {
    background-color: #f5f6f9;
    padding-bottom: 60px;
}

.g-bd {
    position: relative;
    overflow: hidden;
    min-height: 800px;
}

.m-filter .filter dl:last-child {
    border-bottom: none;
}

.m-filter {
    background-color: #fff;
    padding: 10px 0;
    margin-bottom: 10px;
}

    .m-filter .filter dl {
        padding: 14px 0 0 0;
        border-bottom: 1px solid #f2f3f6;
        line-height: 20px;
    }

    .m-filter .filter dd a.on {
        color: #4da5f7;
    }

    .m-filter .filter dd a:first-child {
        padding-left: 0;
    }

    .m-filter .filter dd a {
        float: left;
        margin: 0 10px 10px 0;
        padding: 1px 10px;
        padding-left: 10px;
        line-height: 26px;
    }

.m-rank {
    margin-bottom: 10px;
    padding: 15px 0;
}

.f-clearfix {
    zoom: 1
}

    .f-clearfix:after,
    .f-clearfix:before {
        content: "";
        display: table
    }

    .f-clearfix:after {
        clear: both
    }

.m-rank .rank-list li:first-child {
    margin-left: 0;
}

.m-rank .rank-list li {
    display: block;
    float: left;
    font-size: 14px;
    margin-left: 15px;
}

    .m-rank .rank-list li.checked a, .m-rank .rank-list li a:hover {
        background: #93a3ae;
        color: #fff;
    }

.m-rank .rank-list {
    display: inline-block;
    float: left
}

    .m-rank .rank-list li a {
        display: block;
        padding: 5px 15px;
        border-radius: 4px;
    }

.container::after, .f-clearfix::after {
    clear: both;
}
.o-hd {
    width: 100%;
    position: relative;
    overflow: hidden;
    height: 160px;
    min-width: 1280px;
}

    .o-hd > div {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        -ms-transform: translateX(-50%);
        -moz-transform: translateX(-50%);
        -webkit-transform: translateX(-50%);
        -o-transform: translateX(-50%);
        background: url(../image/在线.png) no-repeat;
        background-size: cover;
        width: 1920px;
        height: 160px;
    }