@media screen and (max-width: 1280px) {
  .main {
    width: 96%;
    margin: 0 auto;
    padding: 0px 10px 20px 10px;
  }
  .nr ul li {
    width: 46%;
  }
  .nr ul li img {
    width: 80%;
    object-fit: cover;
  }
  .nr ul li .img {
    width: 100%;
    min-height: auto;
    height: auto;
    text-align: center;
  }
  #ajaxpage-list {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
  }
}
@media screen and (max-width: 600px) {
  .tite img {
    width: 30%;
    height: 2px;
  }
}
@media screen and (max-width: 500px) {
  .tt{
    padding: 0 5px;
  }
  .tite img {
    width: 27%;
    height: 2px;
  }
  .nr ul li img {
    width: 100%;
    height: 160px;
  }
}
@media screen and (max-width: 450px) {
  .tu1 img {
    width: 28%;
    height: 2px;
  }
}
@media screen and (max-width: 400px) {
  .tu1 img {
    width: 20%;
    height: 2px;
  }
}