/* 中间主题 */
.main {
  width: 100%;
  padding: 70px 0 40px 0;
  /* background: #f8f8f8; */
}
.main-back a {
  font-size: 20px;
}
.main-center {
  width: 1500px;
  padding: 50px 0;
  margin: 0 auto;
  background: #f1f2f7;
  border-radius: 10px;
  position: relative;
}

.showimg-wrapper {
  width: 100%;
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  flex: 0 0 auto;
}
.showimg {
  width: 90%;
}
.showimg img {
  width: 100%;
}
.showimg span {
  display: block;
  padding: 10px 0 20px 0;
  text-align: center;
  font-size: 20px;
  color: #434343;
}

@media screen and (max-width: 1610px) {
  .main-center {
    width: 1200px;
  }
}

@media screen and (max-width: 1330px) {
  .main-center {
    width: 900px;
  }
}

@media screen and (max-width: 1030px) {
  .main-center {
    width: 700px;
  }
}
@media screen and (max-width: 830px) {
  .main-center {
    width: 600px;
  }
}