@media screen and (max-width:1100px) {

  .left_column {
    display: none;
  }

  .under_content {
    width: 90%;
  }

  .right_column {
    width: 100%;
  }

.recruit_container .flex {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}
  
  
  .recruit_container .flex .item {
    width: 48.5%;
  }


  .recruit_container .title_1 {
    font-size: 20px;
  }


  .recruit_container .title_2 {
    font-size: 19px;
  }


  .recruit_container .title_2.ex {
    margin-top: 30px;
  }


}