@media screen and (min-width: 1024px) and (max-width: 1170px) {

  .box,
  .advantage {
    width: 96%
  }

  .about p {
    width: auto;
    padding-right: 50px
  }
}

@media only screen and (max-width: 1023px) {

  .box,
  .advantage {
    width: 96%
  }

  .about p {
    width: auto;
    padding-right: 50px
  }

  header#header {
    background: rgb(0, 0, 0, .8);
    padding: 20px 0
  }

  .white-bg.slideDown {
    background: rgb(0, 0, 0, .8) !important;
  }

  #mnavh {
    display: block;
    position: fixed;
    right: 20px;
    top: 15px;
  }

  #starlist {
    display: none;
    width: 100%;
  }

  nav li {
    width: 100%;
    margin-left: 0;
  }

  nav li a {
    display: block
  }

  nav li:nth-child(1) {
    margin-top: 30px
  }

  nav li:last-child {
    margin-bottom: 200%
  }

  .open {
    top: 15px;
    position: absolute;
    right: 20px;
  }

  .slideDown {
    padding: 20px 0
  }

  .logo {
    float: none;
  }

  .logo img {
    margin: auto;
    height: 50px;
  }

  nav {
    width: 100%;
    float: none;
  }

  .list-bg {
    margin-top: 73px;
  }

  .white-bg #starlist li a {
    color: #fff
  }
}

@media only screen and (max-width: 768px) {
  header#header {
    padding: 10px 0;
  }

  #mnavh,
  .open {
    top: 6px;
  }

  .banner {
    height: 690px;
    font-size: 15px;
  }

  .advantage li section span {
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    display: -webkit-box;
    -webkit-line-clamp: 2;
  }

  .news-list p {
    margin-right: 140px;
  }

  .h-title span {
    width: 80%
  }

  .list-bg {
    margin-top: 60px;
  }

  ul.page-case-list li a {
    margin: 10px;
  }

  .right-box {
    display: none
  }

  .left-box {
    margin-right: 0
  }
}

@media only screen and (max-width: 480px) {
  header#header {
    padding: 5px 0;
  }

  #mnavh,
  .open {
    top: 9px;
    right: 10px;
  }

  .navicon:before,
  .navicon:after {
    height: 3px;
  }

  .navicon,
  .open .navicon:before,
  .open .navicon:after {
    height: 3px;
  }

  .banner {
    height: 560px;
  }

  .banner li:nth-child(1),
  .banner li:nth-child(2) {
    font-size: 22px;
  }

  .banner li:nth-child(3),
  .banner li:nth-child(4) {
    padding: 0 20px;
  }

  .advantage ul {
    height: 170px;
    top: -60px;
    width: 100%;
  }

  .advantage li:nth-child(2) section:before {
    left: -10px;
  }

  .advantage li:nth-child(2) section:after {
    right: -10px
  }

  .advantage {
    height: 150px;
  }

  .advantage li section img {
    height: 50px;
  }

  .advantage li section {
    margin: 10px;
    padding: 10px;
  }

  .advantage li section span {
    display: none;
  }

  .advantage p {
    font-size: 15px;
    margin: 5px 0;
  }

  .h-title h2 {
    font-size: 22px;
  }

  .h-title span {
    overflow: hidden;
    text-overflow: ellipsis;
    -webkit-box-orient: vertical;
    display: -webkit-box;
    -webkit-line-clamp: 2;
  }

  .h-title h2 {
    font-size: 22px;
  }

  .service-a li,
  .service-b li {
    width: 100%;
  }

  .service-a img {
    width: 100%;
  }

  .service-a i {
    float: left;
    width: 120px;
    margin-bottom: 0;
    overflow: hidden;
    margin-right: 10px;
  }

  .service-a section {
    padding: 10px;
    margin-bottom: 10px;
  }

  .service-a span,
  .service-b span {
    padding: 0;
    text-align: left;
    margin-bottom: 0;
  }

  .service-a p,
  .service-b p {
    font-size: 16px;
    text-align: left;
  }

  .service-b i {
    float: left;
    margin-bottom: 0;
  }

  .service-b img {
    width: 90px;
  }

  .service-b li {}

  .service-b section {
    margin: 10px;
    padding: 10px;
    box-shadow: 0px 5px 9px 1px rgba(144, 161, 180, 0.2);
  }

  .service-a {
    margin-bottom: 0;
  }

  .service-b {
    margin-bottom: 30px;
  }

  .case-list li h3 {
    font-size: 14px
  }

  .case-list p {
    display: none;
  }
  
  .case-list li {
    width: 50%;  
  }

  /*.case-list li:nth-child(1),*/
  /*.case-list li:nth-child(2),*/
  /*.case-list li:nth-child(5),*/
  /*.case-list li:nth-child(6) {*/
  /*  width: 50%;*/
  /*}*/

  /*.case-list li:nth-child(3),*/
  /*.case-list li:nth-child(4) {*/
  /*  width: 100%;*/
  /*}*/

  .case-list li {
    /*height: 200px;*/
  }

  .bth-text {
    height: 36px;
    line-height: 36px;
    font-size: 15px;
    width: 160px;
  }

  .case-list ul {
    margin-bottom: 30px;
  }

  .about-section {
    margin: 30px 0;
    background-size: 100%;
  }

  .about {
    margin-top: 160px;
    width: 100%;
  }

  .about h2 {
    font-size: 22px;
    margin: 20px 0 20px 50px;
  }

  .btn-blue {
    margin: 20px 0 0 50px;
  }

  .news-list li i {
    width: 100px;
    height: auto;
    margin-right: 10px;
  }

  .news-list span {
    display: none;
  }

  .news-list h2 {
    margin-right: 0;
    font-size: 16px;
    margin-top: 6px;
  }

  .news-list p {
    margin-right: 0;
    float: left;
    margin-top: 10px;
    -webkit-line-clamp: 2;
  }

  .news-list li {
    margin: 20px 10px;
  }

  .news {
    margin-bottom: 30px;
  }

  .contact-list li {
    width: 50%;
    font-size: 14px;
  }

  .ft-img {
    float: none;
  }

  .end-logo {
    margin: 20px auto;
  }

  .end-nav {
    text-align: center;
  }

  .end-nav li {
    margin-right: 5px;
    padding-right: 5px;
  }

  .end-nav li:after {
    right: 0px;
  }

  p.copyright {
    text-align: center;
    padding: 0 20px;
  }

  .banner ul {
    top: 20%;
  }

  .list-bg {
    margin-top: 60px;
    height: 200px;
  }

  .content {
    padding: 0 10px;
  }

  .list-title {
    margin-bottom: 20px;
  }

  ul.page-case-list li {
    width: 100%;
  }

  ul.page-case-list li i {
    height: auto;
    height: 280px;
  }

  ul.page-case-list li i img {
    height: 100%;
    width: 100%;
    object-fit: cover;
  }

  .tell-tit h2 {
    font-size: 18px;
  }

  .tell-tit p {
    padding: 0 30px;
    line-height: 24px;
  }

  .kefu li {
    width: 100%;
  }

  .kefu li img {
    float: left;
    width: 100px;
    margin-right: 10px;
  }

  .kefu li a {
    margin: 10px;
    box-shadow: 0px 3px 9px 1px rgba(144, 161, 180, 0.2);
    padding: 5px;
    border: 1px solid #f4f4f4;
  }

  .kefu li h3 {
    text-align: left;
    margin: 20px 0 10px 0;
  }

  .kefu p {
    text-align: left;
  }

  ul.form-sq {
    width: 80%;
  }

  .news-info {
    box-shadow: 0px 3px 9px 1px rgba(144, 161, 180, 0.2);
    border: 1px solid #f4f4f4;
    margin: 0 10px;
  }

  .news-info p:last-child {
    display: block;
    clear: both;
    margin-top: 20px;
  }

  .news-info i {
    width: 80px;
  }

  .nextinfo {
    margin: 10px;
  }

  .nextinfo li {
    width: 100%
  }
}