.s1_btn:nth-child(2) {
      background-color: #353535;
  }
  .li_in {
      font-size: 20px;
      display: block;
      margin-bottom: 10px;
  }
  #in_s5 {
      padding: 60px 0 75px 0;
  }
  .s5_wrap {
      background-image: url(../img/wrok/2.jpg);
      background-size: cover;
      background-repeat: no-repeat;
      float: left;
      width: 100%;
      overflow: hidden;
      margin-top: 30px;
  }
  .in_s5_wrap {
      margin: 0 auto;
      width: 43%;
      overflow: hidden;
      padding: 70px 0;
  }
  .in_s5_wrap li {
      float: left;
      width: 100%;
      margin: 0 10px 15px 0;
  }
  .in_s5_wrap li img {
      margin-right: 2%;
  }
  .li_txt {
      line-height: 35px;
      font-size: 17px;
      font-weight: 400;
      background-color: #ffffff;
      float: left;
      width: 87%;
      padding-left: 15px;
  }
  #section_7 {
      background-image: url(../img/wrok/3.jpg);
      background-size: cover;
      background-repeat: no-repeat;
  }
  #in_s7 {
      margin-top: 90px;
  }
  #s7_txt {
      color: #ffffff;
      margin-bottom: 90px;
  }
  #in_s8,#in_s9{
      padding: 60px 0 75px 0;
  }

#section_9 {
      background-image: url(../img/wrok/4.jpg);
      background-size: cover;
      background-repeat: no-repeat;
      margin-top: 50px;
  }

.s9_txt li{
    font-size: 20px;
    margin-bottom: 20px;
}

@media all and (max-width:1536px){
    .in_s5_wrap{
        width: 55%;
    }
}

@media all and (max-width:1366px){
    .in_s5_wrap{
        width: 60%;
    }
}