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

.teacher_nav {
    width: 300px;
    position: relative;
    top: -103px;
    z-index: 100;
}
.banner-img {
     margin-top: 195px;
    width: 100%;
}

.banner-img img {
    width: 100%;
   
}

.teacher_nav .list_nav_title1 {
    width: 280px;
    height: 98px;
    background: url('../img/list_nav.png') no-repeat;
    background-size: 100% 100%;
    font-size: 30px;
    text-align: center;
    color: #fff;
    line-height: 98px;
}

.nav-list {
    margin-top: 15px;
}

.teacher_nav .nav-list .nav-item {
    width: 280px;
    min-height: 70px;
    background-color: #f5f5f5;
    border-bottom: 1px solid #e5e5e5;
    font-size: 20px;
    text-align: center;
    color: #404040;
    line-height: 70px;
}

.submenu li {
    width: 280px;
    height: 70px;
    background-color: #f5f5f5;
    border-bottom: 1px solid #e5e5e5;
    font-size: 20px;
    text-align: center;
    color: #404040;
    line-height: 70px;
}

.submenu {
    max-height: 0;
    overflow: hidden;
}

.has-submenu:hover .submenu {
    overflow: auto;
    /* min-height: 72px; */
    max-height: 300px;
}

.teacher_nav .nav-list li:hover {
    transition: all 0.3s;
    color: #fff;
    background-color: #0068b7;
}



.nav-link {
    display: block;
    width: 100%;
    height: 100%;
}

.submenu li a {
    display: block;
    width: 100%;
    height: 100%;
}

.teacher_nav .nav-list li:hover .nav-link::after {
    content: '';
    display: inline-block;
    width: 10px;
    height: 15px;
    background: url('../img/sjt.png') no-repeat;
    background-size: 100% 100%;
    margin-left: 10px;
}

/* 文章部分 */
.teacher_list {
    width: 1100px;

}

.teacher_list_nav {
    display: flex;
    height: 70px;
    color: #404040;
    align-items: center;
    border-bottom: 1px solid #e5e5e5;
}

.teacher_postion {
    display: flex;
    align-items: center;
}

.teacher_postion::before {
    content: '';
    display: block;
    position: relative;
    width: 17px;
    height: 24px;
    background: url("../img/teacher_postion.png") no-repeat;
    background-size: 100% 100%;
    margin-right: 10px;
}

.teacher_postion {
    margin-right: 10px;
}

.teacher_list_nav ul {
    display: flex;
}



.teacher_list_nav ul li::after {
    content: '>';
    margin: 0 5px;
    display: inline-block;
}

.teacher_list_nav ul li:hover {
    font-weight: 500;
}

.teacher_list_nav ul li:last-child:after {
    content: '';
}



.teacher_list_list {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    margin-top: 34px;
    margin-bottom: 10px;
}

.teacher_list_list li {
    display: flex;
    width: 514px;
    height: 235px;
    padding: 40px 30px;
    background: url(../img/teacher_list_bgc.png) no-repeat;
    background-size: 100% 100%;
    margin-right: 40px;
    margin-bottom: 35px;
}

.teacher_list_list li a {
    width: 100%;
    height: 100%;
    display: flex;
}

.teacher_list_list li:nth-child(2n) {
    margin-right: 0;
}

.teacher_list_list li:hover {
    box-shadow: 1px 5px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    /* transform: scale(1.01); */
}

.teacher_img {
    width: 222px;
    height: 160px;
}

.teacher_img img {
    width: 100%;
    height: 100%;
}

.teacher_info {
    width: 268px;
    margin-left: 20px;
}

.teacher_info h3::before {
    content: '';
    display: inline-block;
    width: 15px;
    height: 15px;
    background: url('../img/cogs.png') no-repeat;
    background-size: 100% 100%;
    margin-right: 14px;
}

.teacher_info h3 {
    color: #0068b7;
    font-size: 20px;
    margin-bottom: 13px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 237px;
}

.teacher_info h4 {
    color: #0068b7;
    font-weight: 400;
    border-bottom: 1px solid #0068b7;
    font-size: 15px;
    padding-bottom: 16px;
}


.teacher_info p {
    color: #404040;
    font-size: 15px;
    margin-top: 16px;
    line-height: 1.6;
    height: 90px;
    display: -webkit-box;
    /* 使用弹性盒子模型 */
    -webkit-box-orient: vertical;
    /* 内容垂直排列 */
    -webkit-line-clamp: 5;
    /* 根据行高和容器高度计算最多显示行数（110px / 1.6 ≈ 69px * 6 ≈ 105px） */
    overflow: hidden;
    /* 隐藏溢出内容 */
    text-overflow: ellipsis;
    /* 添加省略号 */
}

.ly_page_div {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}