.picture{
    width: 100%;
    height: 240px;
}
.all_class{
    margin-left: 55px;
    height:128px;
}
.all_class a{
    text-decoration: none;
}
.all_class .all{
    float:left;
    margin-left: 20px;
    margin-top: 20px;
    border: 1px solid #DBDBDB;
    width: 106px;
    height: 35px;
    font-family:PingFangSC-Regular;
    font-size: 14px;
    color: #666666;
    letter-spacing: 0px;
    text-align: center;
    line-height: 35px;
}
.class_detail{
    margin-left: 31px;
    margin-top:26px;
    float: left;
}
.all a{
    color: #666666;
    text-decoration: none;
}
.all a:hover{
    color:#666666;
}
.class_detail a{
    color:#666666 ;
}
.class_detail a:hover{
    color:#ff9300;
}
.choose{
    float:left;
    margin-left: 20px;
    margin-top: 20px;
    border: 1px solid #DBDBDB;
    width: 106px;
    height: 35px;
    font-family:PingFangSC-Regular;
    font-size: 14px;
    letter-spacing: 0px;
    text-align: center;
    line-height: 35px;
    background-color: #ff9300;
    color: white;
}
.all_class .choose a{
    color: white;
    text-decoration: none;
}
.line{
    border-top:1px solid #ff9300;
    width:76px;
    margin-left: 19px;
    margin-top: -2px;
}
.teacher_detail{
    width: 125px;
    height: 223px;
    margin-left: 43px;
    margin-top: 21px;
    float: left;
}
.teacher_pic{
    width: 125px;
    height: 180px;
}
.project_name{
    font-family:PingFangSC-Regular;
    font-size:18px;
    color:#373a39;
    letter-spacing:0px;
    text-align:left;
    margin-left: 21px;
}
.longline{
    background:#d8d8d8;
    width:1180px;
    height:1px;
    margin-top: 12px;
    margin-left:19px;
}
.more{
    margin-left: 1130px;
    font-family:PingFangSC-Regular;
    font-size:12px;
    color:#666666;
    margin-top: -12px;
}
.teacher_name{
    float: left;
    font-family:PingFangSC-Regular;
    font-size:14px;
    color:#373a39;
    letter-spacing:0px;
    text-align:center;
    margin-left: 5px;
    margin-top:6px;
    width: 108px;
    height: 37px;
}
.teacher_name a{
    text-decoration: none;
}
.common_div{
    width: 100%;
    float:left;
}
.content{
    width: 1280px;
    margin: 0 auto
}

.article_nav_teacher{
    width: 1180px;
    overflow: hidden;
    height: 60px;
    border-bottom: 1px solid #DBDBDB;
    margin-top: 20px;
    margin-left: 50px;
    margin-right: 50px;
}
.article_nav_left_logo{
    background: #ff9300;
    width: 6px;
    height: 36px;
    float: left;
    margin-right: 20px;
}
.article_nav_title_content{
    font-family: PingFangSC-Regular;
    font-size: 20px;
    color: #373A39;
    letter-spacing: 0px;
    text-align: left;
    line-height: 19px;
}
.article_nav_title{
    width: 50%;
    min-width: 210px;
    height: auto;
    float: left;
}
.article_nav_title_msg{
    font-family: PingFangSC-Regular;
    font-size: 12px;
    color:#999999;
    letter-spacing: 0px;
    text-align: left;
    margin-left: 20px;
    height: 17px;
    margin-top: 3px;
}
.article_posion{
    float: left;
    width: 50%;
    min-width: 210px;
    font-family:PingFangSC-Regular;
    font-size:14px;
    color:#999999;
    letter-spacing:0px;
    text-align:right;
    height: 36px;
    line-height: 36px;
}
.article_posion a{
    font-size: 14px;
    color: #999999;
    text-decoration: none;
}
.article_posion a:hover{
    text-decoration:none;
    color: #ff9300;
}
.article_posion .jsfc{
    color: #373A39;
}