.about_box {

  padding: 30px ;

  box-sizing: border-box;

}

.about_box .about_box_content{

  display: flex;

  border-top: 1px solid #DADADA;

}

.about_box .about_box_content ul {

  width: 20%;

  

}

.about_box .about_box_content ul li{

  padding: 10px 0;

  padding-left: 20px;

  box-sizing: border-box;

  border-bottom: 1px dashed #DADADA;

  cursor: pointer;

}

.about_box .about_box_content ul .active{

  color: #1E79B3;

  font-weight: 600;

}

.about_box_content_l{

  flex: 1;

  padding: 20px 40px;

  box-sizing: border-box;

  border-left: 1px solid #DADADA;

}

.about_box_content_l h2{

  text-align: center;

  margin-bottom: 20px;

}

.about_box_content_l .item dl dd{

  display: flex;

  align-items: center;

  margin-bottom: 10px;

}