@media screen and (max-width: 420px) {
  .prline{
    width: 206px;
    height: 2px;
    background-color: #006bb6;
    margin: 3px auto;
  }
  .case {
    width: 100%;
    background-color: #f1f1f1;
  }
  .case .one_step {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .case .one_step .steps {
    display: block;
    text-decoration: none;
    width: 46%;
    height: 300px;
    text-align: center;
    background-color: white;
    margin: 20px 0;
  }
  .case .one_step .steps img {
    width: 100%;
  }
  .case .one_step .steps span {
    display: block;
    font-size: 16px;
    color: black;
    margin-top: 20px;
  }
  .case .one_step .steps span:last-child {
    margin-top: 10px;
    padding: 0 10px;
    font-size: 12px;
    color: #666666;
  }
  .case .one_step .steps:hover {
    background-color: #00a1ea;
  }
  .case .one_step .steps:hover span {
    color: white;
  }
  .morecase {
    width: 100%;
    padding-bottom: 50px;
  }
  .morecase .more {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .morecase .more .others {
    width: 46%;
    text-align: center;
    margin: 20px 1%;
  }
  .morecase .more .others img {
    width: 100%;
  }
  .morecase .more .others span {
    display: block;
    font-size: 16px;
    margin-top: 20px;
  }
  .morecase .more .others span:nth-child(3) {
    font-size: 12px;
    color: #666666;
    margin-top: 10px;
    height: 50px;
    overflow: hidden;
  }
  .morecase .more .others a {
    display: block;
    text-decoration: none;
    font-size: 14px;
    color: #666666;
    width: 100px;
    height: 36px;
    border: solid 1px #cccccc;
    line-height: 36px;
    margin: 0 auto;
    margin-top: 10px;
  }
  .technological {
    width: 100%;
    background-color: #f1f1f1;
    position: relative;
  }
  .technological .doit {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-bottom: 50px;
    position: relative;
    z-index: 10;
  }
  .technological .doit .punctuation {
    width: 18%;
    text-align: center;
  }
  .technological .doit .punctuation img:first-child {
    width: 100%;
  }
  .technological .doit .punctuation span {
    display: block;
    font-size: 12px;
  }
  .technological .line {
    width: 100%;
    /* height: 2px; */
    position: absolute;
    top: 45%;
    left: 0%;
    z-index: -1;
    /* display: none; */
  }
}
@media screen and (max-width: 769px) and (min-width: 420px) {
  .prline{
    width: 206px;
    height: 2px;
    background-color: #006bb6;
    margin: 3px auto;
  }
  .case {
    width: 100%;
    background-color: #f1f1f1;
  }
  .case .one_step {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .case .one_step .steps {
    display: block;
    text-decoration: none;
    width: 200px;
    height: 300px;
    text-align: center;
    background-color: white;
    margin: 40px 0;
  }
  .case .one_step .steps img {
    width: 100%;
  }
  .case .one_step .steps span {
    display: block;
    font-size: 16px;
    color: black;
    margin-top: 20px;
  }
  .case .one_step .steps span:last-child {
    margin-top: 10px;
    padding: 0 10px;
    font-size: 12px;
    color: #666666;
  }
  .case .one_step .steps:hover {
    background-color: #00a1ea;
  }
  .case .one_step .steps:hover span {
    color: white;
  }
  .morecase {
    width: 100%;
    padding-bottom: 50px;
  }
  .morecase .more {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .morecase .more .others {
    width: 46%;
    text-align: center;
    margin: 20px 1%;
  }
  .morecase .more .others img {
    width: 100%;
  }
  .morecase .more .others span {
    display: block;
    font-size: 16px;
    margin-top: 20px;
  }
  .morecase .more .others span:nth-child(3) {
    font-size: 12px;
    color: #666666;
    margin-top: 10px;
    height: 50px;
    overflow: hidden;
  }
  .morecase .more .others a {
    display: block;
    text-decoration: none;
    font-size: 14px;
    color: #666666;
    width: 100px;
    height: 36px;
    border: solid 1px #cccccc;
    line-height: 36px;
    margin: 0 auto;
    margin-top: 10px;
  }
  .technological {
    width: 100%;
    background-color: #f1f1f1;
    position: relative;
  }
  .technological .doit {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-bottom: 50px;
    position: relative;
    z-index: 10;
  }
  .technological .doit .punctuation {
    width: 18%;
    text-align: center;
  }
  .technological .doit .punctuation img:first-child {
    width: 100%;
  }
  .technological .doit .punctuation span {
    display: block;
  }
  .technological .line {
    width: 84%;
    height: 2px;
    position: absolute;
    top: 60%;
    left: 8%;
    z-index: -1;
  }
}
@media screen and (max-width: 992px) and (min-width: 769px) {
  .prline{
    width: 206px;
    height: 2px;
    background-color: #006bb6;
    margin: 3px auto;
  }
  .case {
    width: 100%;
    background-color: #f1f1f1;
  }
  .case .one_step {
    width: 100%;
    margin: 0 auto;
    margin-top: 50px;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .case .one_step .steps {
    display: block;
    text-decoration: none;
    width: 30%;
    height: 380px;
    text-align: center;
    background-color: white;
    margin: 40px 0;
  }
  .case .one_step .steps img {
    width: 100%;
  }
  .case .one_step .steps span {
    display: block;
    font-size: 18px;
    color: black;
    margin-top: 20px;
  }
  .case .one_step .steps span:last-child {
    margin-top: 10px;
    padding: 0 10px;
    font-size: 14px;
    color: #666666;
  }
  .case .one_step .steps:hover {
    background-color: #00a1ea;
  }
  .case .one_step .steps:hover span {
    color: white;
  }
  .morecase {
    width: 100%;
    padding-bottom: 50px;
  }
  .morecase .more {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .morecase .more .others {
    width: 23%;
    text-align: center;
    margin: 20px 1%;
    padding-bottom: 20px;
  }
  .morecase .more .others:hover{
    box-shadow: 0 0 10px #666666;
  }
  .morecase .more .others img {
    width: 100%;
  }
  .morecase .more .others span {
    display: block;
    font-size: 18px;
    margin-top: 20px;
  }
  .morecase .more .others span:nth-child(3) {
    font-size: 14px;
    color: #666666;
    margin-top: 10px;
    height: 60px;
    overflow: hidden;
  }
  .morecase .more .others a {
    display: block;
    text-decoration: none;
    font-size: 14px;
    color: #666666;
    width: 120px;
    height: 36px;
    border: solid 1px #cccccc;
    line-height: 36px;
    margin: 0 auto;
    margin-top: 10px;
  }
  .technological {
    width: 100%;
    background-color: #f1f1f1;
    position: relative;
  }
  .technological .doit {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-bottom: 50px;
    position: relative;
    z-index: 10;
  }
  .technological .doit .punctuation {
    width: 18%;
    text-align: center;
  }
  .technological .doit .punctuation span {
    display: block;
  }
  .technological .line {
    width: 95%;
    position: absolute;
    top: 132px;
    left: 3%;
    z-index: -1;
  }
}
@media screen and (max-width: 1200px) and (min-width: 992px) {
  .prline{
    width: 206px;
    height: 2px;
    background-color: #006bb6;
    margin: 3px auto;
  }
  .case {
    width: 100%;
    background-color: #f1f1f1;
  }
  .case .one_step {
    width: 100%;
    margin: 0 auto;
    margin-top: 50px;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .case .one_step .steps {
    display: block;
    text-decoration: none;
    width: 30%;
    height: 380px;
    text-align: center;
    background-color: white;
    margin: 40px 0;
  }
  .case .one_step .steps img {
    width: 100%;
  }
  .case .one_step .steps span {
    display: block;
    font-size: 18px;
    color: black;
    margin-top: 20px;
  }
  .case .one_step .steps span:last-child {
    margin-top: 10px;
    padding: 0 10px;
    font-size: 14px;
    color: #666666;
  }
  .case .one_step .steps:hover {
    background-color: #00a1ea;
  }
  .case .one_step .steps:hover span {
    color: white;
  }
  .morecase {
    width: 100%;
  }
  .morecase .more {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-flow: row wrap;
  }
  .morecase .more .others {
    width: 23%;
    text-align: center;
    margin: 20px 1%;
    padding-bottom: 20px;
  }
  .morecase .more .others:hover{
    box-shadow: 0 0 10px #666666;
  }
  .morecase .more .others img {
    width: 100%;
  }
  .morecase .more .others span {
    display: block;
    font-size: 18px;
    margin-top: 20px;
  }
  .morecase .more .others span:nth-child(3) {
    font-size: 14px;
    color: #666666;
    margin-top: 10px;
    height: 60px;
    overflow: hidden;
  }
  .morecase .more .others a {
    display: block;
    text-decoration: none;
    font-size: 14px;
    color: #666666;
    width: 120px;
    height: 36px;
    border: solid 1px #cccccc;
    line-height: 36px;
    margin-left: 50px;
    margin-top: 10px;
  }
  .technological {
    width: 100%;
    background-color: #f1f1f1;
    position: relative;
  }
  .technological .doit {
    width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-bottom: 50px;
    position: relative;
    z-index: 10;
  }
  .technological .doit .punctuation {
    width: 18%;
    text-align: center;
  }
  .technological .doit .punctuation span {
    display: block;
  }
  .technological .line {
    position: absolute;
    width: 90%;
    top: 132px;
    left: 5%;
    z-index: -1;
  }
}
@media screen and (min-width: 1200px) {
  .prline{
    width: 206px;
    height: 2px;
    background-color: #006bb6;
    margin: 3px auto;
  }
  .case {
    width: 100%;
    background-color: #f1f1f1;
    padding-bottom: 50px;
  }
  .case .one_step {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    flex-flow: row wrap;
  }
  .case .one_step .steps {
    display: block;
    text-decoration: none;
    width: 380px;
    height: 380px;
    text-align: center;
    background-color: white;
    margin: 40px 0;
  }
  .case .one_step .steps img {
    width: 100%;
  }
  .case .one_step .steps span {
    display: block;
    font-size: 18px;
    color: black;
    margin-top: 20px;
  }
  .case .one_step .steps span:last-child {
    margin-top: 10px;
    padding: 0 10px;
    font-size: 14px;
    color: #666666;
  }
  .case .one_step .steps:hover {
    background-color: #00a1ea;
  }
  .case .one_step .steps:hover span {
    color: white;
  }
  .morecase {
    width: 100%;
    padding-bottom: 50px;
  }
  .morecase .more {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-flow: row wrap;
  }
  .morecase .more .others {
    width: 270px;
    text-align: center;
    margin: 20px 15px;
    padding-bottom: 20px;
  }
  .morecase .more .others:hover{
    box-shadow: 0 0 10px #666666;
  }
  .morecase .more .others img {
    width: 100%;
  }
  .morecase .more .others span {
    display: block;
    font-size: 18px;
    margin-top: 20px;
  }
  .morecase .more .others span:nth-child(3) {
    font-size: 14px;
    color: #666666;
    margin-top: 10px;
    height: 60px;
    overflow: hidden;
  }
  .morecase .more .others a {
    display: block;
    text-decoration: none;
    font-size: 14px;
    color: #666666;
    width: 120px;
    height: 36px;
    border: solid 1px #cccccc;
    line-height: 36px;
    /* margin-left: 50px; */
    margin: 0 auto;
    margin-top: 10px;
  }
  .technological {
    width: 100%;
    background-color: #f1f1f1;
    position: relative;
  }
  .technological .doit {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-bottom: 50px;
    position: relative;
    z-index: 10;
  }
  .technological .doit .punctuation {
    width: 200px;
    text-align: center;
  }
  .technological .doit .punctuation span {
    display: block;
  }
  .technological .doit .line {
    position: absolute;
    top: 132px;
    z-index: -1;
  }
}