.container{
    width: 1200px;
    margin:0 auto;
}
.nav{
    margin:40px 0 30px;
    color:rgba(0,0,0,0.6);
    font-size:12px;
}
.nav a{
    color:rgba(0,0,0,0.6);
}
.activity_content>.container{
    display: flex;
    justify-content: space-between;
}
.activity_content .left{
    width:875px;
}
.activity_content .left .part1{
    padding:30px 25px 30px 20px;
    box-shadow: 0 5px 20px 0 rgba(167,170,168,0.4);
}
.activity_content .left .part1>h3{
    color:#010101;
    font-size:32px;
    margin-bottom: 15px;
    font-weight: normal;
}
.activity_content .left .part1>div{
    display: flex;
    align-items: center;
}
.activity_content .left .part1>div>img{
    display: block;
    width:500px;
    height: 234px;
}
.activity_content .left .part1 .info_box>span{
    padding:3px 19px 3px 20px;
    background: #feb5a6;
    color:#ffffff;
    font-size:18px;
    border-radius: 0 15px 15px 0;
}
.activity_content .left .part1 .info_box>div{
    margin:30px 0 10px;
}
.activity_content .left .part1 .info_box p{
    display: flex;
    padding-left: 20px;
    align-items: center;
    color:#000000;
    font-size:18px;
    margin-bottom: 10px;
    line-height: 1;
}
.activity_content .left .part1 .info_box p>span{
    display: block;
    width:300px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}
.activity_content .left .part1 .info_box p:last-child{
    font-size:24px;
    color:#2e9a66;
}
.activity_content .left .part1 .info_box img{
    margin-right: 15px;
}
.activity_content .left .part1 .info_box>a{
    display: block;
    width:236px;
    line-height: 40px;
    border-radius: 20px;
    background: #2e9a66;
    color:#fffefe;
    font-size:18px;
    text-align: center;
    margin:20px auto 0;
}
.activity_content .left .part2{
    font-size: 15px;
    color:rgba(0,0,0,0.8);
    line-height: 30px;
}
.activity_content .left .part2 p{
    line-height: 30px;
    margin-bottom: 15px;
}
.activity_content .left .content p span {
    line-height: 30px;
}
/* .activity_content .left .part2 h4{
    color:#000000;
    font-size:18px;
    border-left:6px solid #2e9a66;
    padding-left: 10px;
    margin:45px 0 15px;
}
.activity_content .left .part2 p{
    font-size:14px;
    color:rgba(0,0,0,0.8);
    padding-left: 16px;
    font-weight: normal;
}
.activity_content .left .part2 ul>li{
    display: flex;
    padding-left: 16px;
    margin-bottom: 25px;
    font-weight: normal;
}
.activity_content .left .part2 ul>li:before{
    content:"";
    display: block;
    width:12px;
    height: 12px;
    margin-top:5px;
    background: url("https://imgs.sfkedu.com/yiyiarts/pc/home/img/v2020/activity/li_icon.png") no-repeat;
    background-size: 100% 100%;
}
.activity_content .left .part2 ul>li>p{
    padding-left: 10px;
    line-height: 24px;
} */
.activity_content .left .part3{
    margin-top:10px;
    padding-top: 30px;
    border-top:1px dashed #cccccc; 
}
.activity_content .left .part3 h3{
    color:#010101;
    font-size:32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}
.activity_content .left .part3 h3>a{
    font-size:18px;
    color:rgba(0,0,0,0.6);
    text-decoration: underline;
    font-weight: normal;
    cursor: pointer;
}
.activity_content .left .ul_box>li{
    margin-right:10px;
}
.activity_content .left .ul_box>li:nth-child(4n+4){
    margin-right: 10px;
}
.activity_content .left .ul_box>li:nth-child(3n+3){
    margin-right: 0;
}
.activity_content .right>h3{
    font-size: 20px;
    color:#ff8266;
    margin-bottom: 30px;
    font-weight: normal;
}
.activity_content .right{
    width:280px;
}
.activity_content .right .command_course{
    margin-bottom: 40px;
}
.activity_content .right .command_course>li{
    margin-bottom: 20px;
}
.activity_content .right .command_teacher{
    margin-bottom: 60px;
}
.activity_content .right .command_teacher>li{
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.activity_content .right .command_teacher>li>div {
    display: flex;
    align-items: center;
}
.activity_content .right .command_teacher>li>p {
    width: 84px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #999999;
    font-size: 12px;
    border: 1px solid #a8d19e;
    cursor: pointer;
}
.activity_content .right .command_teacher>li>p>img {
    display: block;
    margin-right: 4px;
}
.activity_content .right .command_teacher>li>div>img {
    display: block;
    margin-right: 5px;
    width: 70px;
    height: 70px;
    border-radius: 50%;
}
.activity_content .right .command_teacher>li>div>div>h4 {
    font-size: 15px;
    color: #333333;
}
.activity_content .right .command_teacher>li>div>div>p {
    font-size: 12px;
    color: #999999;
    margin-top: 10px;
}
.activity_content .right .command_teacher>li>p:hover {
    border-color: #313131;
    background: #313131;
    color: #fff;
    cursor: pointer;
}
.activity_content .right .command_school{
    margin-top:25px;
    border-top:1px dashed #e5e5e5;
}
.activity_content .right .command_school>li{
    margin-top:20px;
    padding-bottom: 19px;
    border-bottom: 1px dashed #e5e5e5;
}
.activity_content .right .command_school>li>a{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.activity_content .right .command_school>li>a>img{
    width:62px;
    height: 62px;
    border-radius: 50%;
}
.activity_content .right .command_school>li>a>div>p{
    color:#999999;
    font-size: 12px;
    margin-top:5px;
    width:200px;
    overflow: hidden;
    text-overflow:ellipsis;
    white-space: nowrap;
}
.activity_content .right .command_school>li>a>div>h3{
    width:200px;
    overflow: hidden;
    text-overflow:ellipsis;
    white-space: nowrap;
    font-size: 16px;
    color:#333333;
}
.activity_content .right .command_school>li>a>div>p>span{
    color:#1cb085;
}