.ztzl_box {
  display: flex;
  /* justify-content: space-between; */
  flex-wrap: wrap;
  margin-bottom: 100px;
}

.ztzl_box a {
  width: 23%;
  margin-top: 30px;
  margin-right: 36px;
}

.ztzl_box a:nth-child(4n) {
  margin-right: 0px;
}

@media (max-width: 1500px) {
  .ztzl_box a {
    margin-right: 30px;
  }
}

@media (max-width: 1280px) {
  .ztzl_box a {
    width: 48%;
    margin-right: 0;
  }

  .ztzl_box a img {
    width: 100%;
  }

  .ztzl_box {
    justify-content: space-between;
  }
}