.main > div:first-child {
  width: 1200px;
  position: absolute;
  top: 0;
}
.architecture {
  width: 925px;
}
.main_draw {
  width: 68%;
  height: 1px;
  background-color: #b1d8f2;
  margin: 50px 0;
}
.carousel_dept {
  width: 1200px;
}
.architecture img,
.carousel_dept img {
  width: 100%;
}
.dept-big-img {
  width: 100%;
  height: 680px;
  margin: 0 auto;
  background: url("../image/1.png") no-repeat;
  transition: 1s;
  border: 1px solid #186daa;
  box-sizing: border-box;
  background-size: 100% 100%;
}
.dept-small-img-list {
  width: 100%;
  margin-top: 20px;
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
}
.dept-small-img {
  cursor: pointer;
  width: 24%;
  padding: 10px;
  box-sizing: border-box;
  background-color: transparent;
  opacity: 1;
  transition: 1s;
}
.moveSmallImg {
  /* opacity: 0;
  transform: translateY(-130px); */
  background-color: #186daa;
}
@media (max-width: 1220px) {
  .main > div:first-child,
  .architecture,
  .carousel_dept {
    width: 800px;
  }
  .dept-big-img {
    height: 534px;
  }
}
@media (max-width: 819px) {
  .main > div:first-child,
  .architecture,
  .carousel_dept,
  .main_draw {
    width: 100%;
  }

  .dept-big-img {
    height: 400px;
  }
}
@media (max-width: 400px) {
  .dept-big-img {
    height: 260px;
  }
  .dept-small-img {
    padding: 3px;
  }
}