header {
    background-image: url(../images/banner2.png) !important;
    position: relative;
    background-size: 100% 200%;
}

header .breadcrumb-row .col {
    position: relative;
}

.header-breadcrumb {
    position: absolute;
    right: 0;
}

header .breadcrumb-row {
    position: absolute;
    width: 100%;
    bottom: 1rem;
    padding: 0 10%;
}

header .breadcrumb-title {
    color: #ffffff;
    font-size: 30px;
    margin-bottom: 0;
    line-height: 48px;
    padding-left: 25%;
}

.header-breadcrumb .breadcrumb {
    background-color: rgba(0, 0, 0, 0);
}

.header-breadcrumb .breadcrumb .breadcrumb-item {
    color: #ffffff;
}

/* Container */
.Container {
    overflow: hidden;
    max-width: 1920px;
    width: 100%;
    margin: 0 auto !important;
    background-color: #ffffff;
}

.Container .ContainerLF {
    float: left;
    background-color: #F7F7F7;
    padding: 0;
    width: 25%;
}

.Container .ContainerRT {
    float: left;
    width: 75%;
}

.Container .ContainerLF .list-group-item {
    border: none;
    text-align: center;
    background-color: rgba(0, 0, 0, 0);
    line-height: 3rem;
    font-size: 1.1rem;
    margin: .75rem 0;
    padding: 0 1.25rem;
    font-family: 'PingFangSC-Regular', 'SourceHanSans-Medium', 'Microsoft YaHei', 'SimSun', 'SimHei', 'Lucida Grande', 'Tahoma', 'Arial', 'Helvetica', 'sans-serif' !important;
}

.Container .ContainerLF .list-group-item.on {
    background-color: #D4E6FD;
    color: #2776BD;
}

.Container .ContainerLF .list-group-item:hover {
    background-color: #D4E6FD;
    color: #2776BD;
}

.Container .ContainerLF .list-group-parent .list-group-item::before {
    content: '';
    position: absolute;
    width: 15px;
    height: 15px;
    left: calc(40% - 25px);
    top: 17px;
    background: url(../images/sub_menu.png);
    background-size: 100% 100%;
}

.Container.row {
    margin: 0;
}

.Container .lf {
    float: left;
}

.Container .rt {
    padding-left: 2rem;
    width: calc(100% - 2rem);
}

.Content {
    margin-top: 30px;
    overflow: hidden;
}

/* Container-end */

/* list */
.Content .list-group-item:first-child {
    border-top-left-radius: 0;
    border-top-right-radius: 0;
    border-top: 0;
    border-bottom: 0;
}

.Content .list-group-item:last-child {
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.Content .list-group-item {
    position: relative;
}

.Content .dropdown .dropdown-menu {
    width: 100% !important;
    position: relative;
}

.Content .list-group {
    width: 12rem;
    text-align: center;
    font-size: 1.1rem;
    line-height: 2rem;
    border-bottom: 1px solid rgba(0, 0, 0, .125);
}

.Content .father-channel {
    width: 12rem;
    display: block;
    text-align: center;
    font-size: 1.5rem;
    line-height: 5rem;
    height: 5rem;
    background-color: #6B0C84;
    color: #ffffff;
}

.Content .list-group-item.active {
    z-index: 2;
    color: #6B0C84;
    background-color: #f8f9fa;
    border-top: 1px solid rgba(0, 0, 0, .125);
    border-left: 1px solid rgba(0, 0, 0, .125);
    border-right: 1px solid rgba(0, 0, 0, .125);
    border-bottom: 1px solid rgba(0, 0, 0, .125);
    font-weight: bold;
}

.Content .dropMenu .list-group-item.active {
    border-bottom: none;
}

.Content .List li {
    display: block;
    height: 4rem;
    border-bottom: 1px dashed #bcbdbd;
    position: relative;
}

.Content .List li a {
    float: left;
    line-height: 4rem;
    width: calc(100% - 7rem);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 1rem;
    color: #495057;
}

/*.Content .List li a::before {*/
/*  width: 1rem;*/
/*  height: 1rem;*/
/*  position: absolute;*/
/*  left: 0.5rem;*/
/*  top: 2.3rem;*/
/*  display: block;*/
/*  background: url(../images/prefix.png) no-repeat;*/
/*  z-index: 11;*/
/*  content: '';*/
/*  transition: all 0.3s ease-in-out;*/
/*}*/
.Content .List li span {
    float: right;
    line-height: 4rem;
    color: #bcbdbd;
    width: 7rem;
    font-size: 1rem;
    text-align: right;
}

/* list-end */

/* pagination */
.Content .pagination {
    display: block;
    text-align: right;
    padding-right: 1rem;
}

.Content .pagination li {
    display: inline-block;
}

.Content .page-box {
    position: relative;
    display: block;
    padding: .5rem .75rem;
    margin-left: -1px;
    line-height: 1.25;
    color: #333;
    background-color: #fff;
    border: 1px solid #dee2e6;
}

.Content .input-group {
    width: 10rem;
}

.Content .input-group .btn {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    color: #333;
    background-color: #fff;
    border: 1px solid #dee2e6;
}

.Content .form-control {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.Content .page-link {
    color: #333;
}

.Content .page-link:hover {
    z-index: 2;
    color: #ffffff;
    text-decoration: none;
    background-color: #12192D;
    border-color: #12192D;
}

.Content .active {
    z-index: 2;
    color: #ffffff;
    text-decoration: none;
    background-color: #12192D;
    border-color: #12192D;
}

/* pagination-end */

/* article */
.article {
    padding: 1rem;
}

.article .article-title {
    width: 100%;
    line-height: 5rem;
    font-size: 2rem;
    text-align: center;
    font-weight: bold;
    padding-bottom: 1rem;
    border-bottom: 1px solid #bcbdbd;
    margin-bottom: 1rem;
}

.article .article-sub {
    text-align: right;
    color: #8a8a8a;
    line-height: 3rem;
}

.article .article-sub span {
    padding-left: 1rem;
}

.article .article-content {
    margin-top: 1rem;
}

/* article-end */

/* drop */
.dp-menu {
    display: none;
}

.dp-menu .dp-menu-item {
    color: #333;
    display: block;
    line-height: 2rem;
    text-align: center;
    font-size: 1rem;
    padding: .5rem 1.25rem;
}

.dp-menu .dp-menu-item:hover {
    background-color: #f8f9fa;
}

.dropMenu.active .dp-menu {
    display: block;
}

.dp-menu .dp-menu-item.active {
    background-color: #f8f9fa;
    color: #6B0C84;
    font-weight: bold;
}

/* drop-end */

/* Teacher */
.list-group-parent .list-group-parent-title {
    border-bottom: 1px solid #bcbdbd;
    line-height: 3rem;
    font-size: 1.2rem;
    margin: .75rem 0;
    padding: 0 1.25rem;
    text-align: left;
    padding-left: 25%;
    font-family: 'PingFangSC-Regular', 'SourceHanSans-Medium', 'Microsoft YaHei', 'SimSun', 'SimHei', 'Lucida Grande', 'Tahoma', 'Arial', 'Helvetica', 'sans-serif' !important;
}

.list-group-parent .list-group-parent-title a {
    color: #495057;
    font-size: 1.2rem;
}

.list-group-parent .list-group-item {
    font-size: 1rem !important;
    text-align: left !important;
    padding-left: 40% !important;
}

.list-group-parent .list-group-item a {
    color: #495057;
}

.Teacher {
    overflow: hidden;
    position: relative;
}

.Teacher .mb-5, .my-5 {
    margin-bottom: 2rem !important;
}

.Teacher-item {
    width: 49%;
    height: 240px;
    float: left;
    margin-right: 2%;
    padding: 1rem;
    position: relative;
    border: 1px solid #bcbdbd;
}

.Teacher-item:nth-child(2n) {
    margin: 0;
}

.Teacher-item-lf {
    float: left;
}

.Teacher-item-rt {
    float: left;
    width: calc(100% - 10rem);
    padding: 1rem;
}

.Teacher-item-rt .title {
    line-height: 2rem;
    min-width: 200px;
}

.Teacher-item-rt .pos {
    line-height: 2rem;
    display: inline-block;
}

.Teacher-item-rt p {
    margin-top: 1rem;
    line-height: 2rem;
    display: block;
    height: 2rem;
    white-space: nowrap; /* 不换行 */
    overflow: hidden; /* 隐藏溢出部分 */
    text-overflow: ellipsis; /* 显示省略号 */
}

.Teacher-item-rt .pos span {
    padding-left: 0.4rem !important;
}

.Teacher-item-rt .title h5 {
    display: inline-block;
    color: #333;
    font-weight: bold;
}

.Teacher-item-rt .title span {
    color: #8a8a8a;
    padding-left: 1rem;
}

.Teacher-item img {
    width: 10rem;
    height: 12rem;
}

.Teacher a {
    color: #333;
}

.Teacher a:hover {
    color: #333;
}

.Teacher-item-rt .summary {
    height: 4.5rem;
    margin-top: 1rem;
    color: #8a8a8a;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

@media screen and (max-width: 1400px) {
    .Teacher-item {
        width: 100%;
    }
}