.mainContent {
    margin: 20px auto 0;
}

.typeBox {
    width: 1200px;
    height: auto;
    background: #FFFFFF;
    border-radius: 5px;
    margin: 0 auto 20px;
    box-sizing: border-box;
}

.typeBox1 {
    padding: 30px 40px;
}

.typeBox1 .types {
    display: flex;
}

.typeBox1 .types .typeTitleBox {
    margin-right: 20px;
    display: flex;
    align-items: center;
    height: 30px;
}

.typeBox1 .types .typeTitleBox .leftBorder {
    width: 3px;
    height: 14px;
    background: #F37B1D;
    border-radius: 2px;
    margin-right: 10px;
}

.typeBox1 .types .typeTitleBox .typeTitle {
    width: 60px;
    font-size: 14px;
    font-family: PingFang-SC-Medium, PingFang-SC;
    font-weight: 500;
    color: #999999;
}

.typeBox1 .types .box {
    display: flex;
    flex-wrap: wrap;
}

.typeBox1 .types .box .sin {
    font-size: 14px;
    font-family: PingFang-SC-Medium, PingFang-SC;
    font-weight: 500;
    color: #333333;
    cursor: pointer;
    margin-right: 40px;
    box-sizing: border-box;
    line-height: 34px;
    margin-bottom: 10px;
}

.typeBox1 .types .box .sin.active {
    width: auto;
    height: 34px;
    background: #FFF5EE;
    border-radius: 20px;
    font-size: 14px;
    font-family: PingFang-SC-Medium, PingFang-SC;
    font-weight: 500;
    color: #F37B1D;
    padding: 0px 17px;
    line-height: 34px;
}

.type_symbol_line {
    width: auto;
    height: 1px;
    background: #E9E9E9;
    margin: 20px auto;
}

.class_content_box {
    width: 1200px;
    height: auto;
    border-radius: 5px;
    margin: 0 auto 20px;
    box-sizing: border-box;
}

.class_content_box .title_line {
    display: flex;
    justify-content: space-between;
}

.class_content_box .title_line .title {
    font-size: 20px;
    font-family: MicrosoftYaHei-Bold, MicrosoftYaHei;
    font-weight: bold;
    color: #333333;
    margin-right: 30px;
}

.class_content_box .title_line .filter_btns {
    display: flex;
    align-items: center;
    height: 32px;
    border-radius: 5px;
    border: 1px solid #CCCCCC;
}

.class_content_box .title_line .filter_btns .btn {
    font-size: 14px;
    font-family: PingFang-SC-Medium, PingFang-SC;
    font-weight: 500;
    color: #333333;
    height: 32px;
    width: 56px;
    text-align: center;
    line-height: 32px;
    cursor: pointer;
}

.class_content_box .title_line .filter_btns .btn.active {
    background: #FFF5EE;
    font-weight: 500;
    color: #F37B1D;
}

.class_content_box .title_line .filter_btns .new_btn {
    border-left: 1px solid #CCCCCC;
    border-right: 1px solid #CCCCCC;
}

.class_content_box .title_line .filter_btns .price_btn,
.all_btn {
    border-radius: 5px;
}

.class_content_box .title_line .filter_btns .price_img {
    width: 5px;
    height: 10px;
    background: url('../base/images/lesson/jgjt_mr.png') no-repeat;
    background-size: 100% 100%;
    display: inline-block;
}

.class_content_box .title_line .filter_btns .price_img_up {
    background: url('../base/images/lesson/jgjts_mr.png') no-repeat;
}

.class_content_box .title_line .filter_btns .price_img_down {
    background: url('../base/images/lesson/jgjtx_mr.png') no-repeat;
}

.class_content_box .title_line .title_search {
    display: flex;
    align-items: center;
}

.class_content_box .title_line .title_search .search_ {
    display: flex;
    align-items: center;
    width: 170px;
    height: 32px;
    background: #F5F6F9;
    border-radius: 19px;
    border: 1px solid #CCCCCC;
    padding: 7px 10px 6px 16px;
    box-sizing: border-box;
}

.class_content_box .title_line .title_search .search_input {
    border: none;
    width: 128px;
    background: none;
    line-height: 32px;
}

.class_content_box .title_line .title_search .search_icon {
    width: 16px;
    height: 16px;
    background: url('../base/images/lesson/ss_icon.png') no-repeat;
    background-size: 100% 100%;
    cursor: pointer;
}

.class_content_box .title_line .title_search .search_text {
    font-size: 14px;
    font-family: PingFang-SC-Medium, PingFang-SC;
    font-weight: 500;
    color: #999999;
    margin-left: 20px;
}

.class_content_box .class_list {
    display: flex;
    flex-wrap: wrap;
    width: 100%;
}

/* 资源列表 */

.ziyuan_list {
    padding: 40px;
    width: 100%;
    box-sizing: border-box;
    background-color: #FFFFFF;
    margin-top: 27px;
}

.ziyuan_list .list {
    width: auto;
    height: auto;
    background: #FFFFFF;
    border-radius: 5px;
    border: 1px solid #E9E9E9;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 19px 16px;
    margin-bottom: 20px;
}

.ziyuan_list .list .title {
    max-width: 600px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 14px;
    font-family: PingFang-SC-Bold, PingFang-SC;
    font-weight: bold;
    color: #333333;
    margin-left: 20px;
}

.ziyuan_list .list .time {
    font-size: 12px;
    font-family: PingFang-SC-Medium, PingFang-SC;
    font-weight: 500;
    color: #999999;
    margin-right: 40px;
}

.ziyuan_list .list .free {
    color: #F37B1D;
}

.ziyuan_list .list .btn {
    width: 88px;
    height: 32px;
    background: #F37B1D;
    border-radius: 25px;
    font-size: 14px;
    font-family: PingFangSC-Semibold, PingFang SC;
    font-weight: 600;
    color: #FFFFFF;
    line-height: 32px;
    text-align: center;
    cursor: pointer;
}

.ziyuan_list .list .btn:hover {
    opacity: 0.8;
}