.main {
}
.main .image-silders-div {
  height: 400px;
}
.main .picture-show-div {
  width: 84%;
  display: table;
  padding-left: 30%;
  padding-right: 0;
}
.picture-show-unit-div {
  height: 100%;
  width: 25%;
  float: left;
  text-align: center;
  position: relative;
}
.picture-show-img {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto auto;
  width: auto;
  height: auto;
  max-height: 100%;
  max-width: 100%;
}