.ztzl {
  display: flex;
    margin-bottom: 50px;
  flex-wrap: wrap;
}

.ztzl a {
  width: 31.5%;
  margin-top: 32px;
  margin-right: 30px;
}

.ztzl a:nth-child(3n) {
  margin-right: 0px;
}

.ztzl a img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

@media (max-width: 1280px) {
  .ztzl a {
    margin-right: 22px;
  }
}

@media (max-width: 992px) {
  .ztzl a {
    width: 48%;
    margin-right: 0;
  }

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

@media (max-width: 480px) {
  .ztzl a {
    width: 100%;
  }
}