.content_wrapper .nav-text{
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
}
.content_wrapper .text-box{
  width: 80%;
  margin: 0 auto;
}
.content_wrapper .nav-text .item{
  width: 45%;
  margin-top: 80px;
  margin-right: 30px;
}
.content_wrapper .nav-text .item .title{
  font-size: 16px;
  font-family: PingFang SC;
  font-weight: 500;
  color: #333333;
  line-height: 24px;
}