* {
    list-style: none;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

#index_cover {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1001;
    background-color: rgba(0, 0, 0, 0.55);
    overflow: auto;
}

#index_cover .close_lesson {
    opacity: 1;
    position: absolute;
    width: 0.7rem;
    height: 0.7rem;
    border-radius: 50%;
    cursor: pointer;
    background-image: url("../images/close.png");
    background-repeat: no-repeat;
    background-size: cover;
    left: 50%;
    transform: translateX(-50%);
}

#index_cover img {
    display: block;
    margin: auto;
    margin-top: 0.3rem;
    width: 80%;
}

.header_img {
    display: block;
    width: 100%;
    height: 1.68rem;
}

.com_nav {
    width: 100%;
    background-color: #013D83;
    height: 0.82rem;
}

.com_nav .com_nav_l {
    float: left;
    display: inline-block;
    list-style: none;
    width: 80%;
    box-sizing: border-box;
    padding-left: 0.19rem;
}

.com_nav .com_nav_l li {
    padding-left: 0.18rem;
    padding-right: 0.18rem;
    float: left;
    line-height: 0.82rem;
    text-align: center;
    font-size: 0.28rem;
    font-family: Microsoft YaHei;
    font-weight: 400;

}
.com_nav .com_nav_l li a{
    display: block;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: rgba(255, 255, 255, 1);
}

.com_nav_r {
    font-size: 0.28rem;
    float: left;
    width: 20%;
    height: 0.82rem;
    display: flex;
    align-items: center;
}

.com_nav_r img {
    display: inline-block;
    margin-top: 0.41rem;
    transform: translateY(-50%);
}

.com_nav_r img:nth-of-type(1) {
    margin-right: 0.39rem;
    width: 0.40rem;
    height: 0.34rem;
}

.com_nav_r img:nth-of-type(2) {
    width: 0.36rem;
    height: 0.37rem;
}

.content {
    width: 100%;
    padding: 0 0.1rem;
}

.jiaoxue_title {
    margin-top: 0.1rem;
    margin-bottom: 0.1rem;
    font-size: 0.1rem;
    color: #333333;
    font-weight: bold;
    position: relative;
    display: flex;
    height: 0.8rem;
}
.jiaoxue_title>div{
    display: flex;
}

.jiaoxue_title .xiaofangjiaoxue {
    flex: 1;
}


.jiaoxue_title .jiankangjiaoxue{
    flex: 1;
}
.jiaoxue_title .jijiujiaoxue{
    flex: 1;
}
.jiaoxue_title .jiankanganquan{
    flex: 1;
}
.jiaoxue_title >div:nth-of-type(1)  span {
    line-height: 0.8rem;
    height: 0.8rem;
    display: block;
    font-size:0.28rem;
    color: #031d83;
    font-weight: bold;
    /*border-bottom: 2px solid #013d83;*/
    position: absolute;
    bottom: 0;
    left: 0;
    width: 5em;
    z-index: 1;
}

.jiaoxue_title_item {
    flex: 1;
    position: relative;
    font-size: 1rem;
}

.jiaoxue_title_active {
    background: none;
    /*color: #00b4ff;*/
    border-bottom: 2px solid #013d83;
}

.jiaoxue_title_item::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0px;
    height: 2px;
    content: '';
    background-color: #e6edf3;
}



.video_list {
    width: 100%;
}

.video_list_ul {
    font-size: 0.1rem;
    width: 100%;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;

}

.video_list_ul li {
    width: 48%;
    margin-bottom: 0.1rem;
}

.video_list_ul li a {
    width: 100%;
    text-decoration: none;
}

.video_list_ul li img {
    display: block;
    width: 100%;
    height: 2.2rem;
}

.video_list_ul h1 {
    font-size: 0.2rem;
    color: #333333;
    margin-top: 0.1rem;
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.index_read_more {
    border-top: 0.02rem solid #EFEFEF;
    width: 100%;
    height: 1.1rem;
    text-align: center;
    font-size: 0.3rem;
    font-family: SimHei;
    font-weight: 400;
    color: rgba(51, 51, 51, 1);
}

.index_read_more span {
    opacity: 0.3;
    line-height: 1.1rem;
    color: #444444;
}

.footer {
    background: #eeeeee;
    text-align: center;
    padding-bottom: 0.1rem;
    box-shadow: 0 2px 6px #dddcdd inset;
    padding-top: 0.1rem;
}

.footer a {
    color: #333333;
    font-size: 0.1rem;
    padding: 0 0.1rem;

}

.footer p.copy {
    padding-top: 0.1rem;
}

.friendlink-m {
    margin-top: 0.1rem;
}

.friendlink-m a {
    color: #7f7f7f;
}

.footer p {
    color: #c1c1c1;
    font-size: 0.1rem;
    margin-bottom: 0.1rem;
}
.list_hide{
    display: none;
}
.list_change{
    flex:3;
    display: flex;
    justify-content: space-around;
}
.list_change span{
    line-height: 0.8rem;
    height: 0.8rem;
    display: block;
    font-size: 0.2rem;
    color: #444444;
    font-weight: bold;
    /* border-bottom: 2px solid #013d83; */
  /*  position: absolute;
    bottom: 0;
    left: 0;*/
    /* margin: auto; */
    width: 5em;
    z-index: 1;
}
.list_change .list_active{
    color:#031d83;
}