header {

  padding-bottom: 0px;
}

.topcre {
  margin-top: 24px;
}

.main_jianto,
.zuo_jianto,
.flate {
  display: none;
}

.maintopicrightlenteng {
  width: 100%;
  flex-wrap: wrap;
  gap: 24px;
}
.aa {
  flex-direction: column;
}
.aa dt {
  width: 178px;
  height: 178px;
}
.h2 {
  margin: 0 auto;
  padding-bottom: 24px;
  padding-top: 24px;
}
.aa dt {
  border-radius: 50%;
}
@media (max-width: 1020px) {
  .ul_lhome {
    display: block;
  }
}
@media (max-width: 1000px) {
  .aa {
    width: 31%;
  }
}
@media (max-width: 765px) {
  .main {
    padding-top: 1px;
  }
  .mian_east {
    margin-top: 0px;
  }
  .aa dt {
    width: 110px;
    height: 110px;
  }
  .aa dd {
    width: 110px;
  }
  .maintopicrightlenteng {
    gap: 10px;
  }
}

@media (max-width: 345px) {
  .aa dt {
    width: 100px;
    height: 100px;
  }
}