*{
  margin: 0;
  padding: 0;
  box-sizing: border-box
}

.show {
  /*width: 400px;
  height: 400px;*/
  width: 100%;
    height: 400px;
    border: 1px solid #DADADA;
    padding: 15px;
}

.small-img {
  /*width: 350px;
  left: 25px;
  */
  height: 70px;
  margin-top: 20px;
  position: relative;
  
}

.small-img .icon-left, .small-img .icon-right {
  width: 12px;
  height: 24px;
  cursor: pointer;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto 0;
}

.small-img .icon-left { transform: rotate(180deg) }

.small-img .icon-right { right: 0; }

.small-img .icon-left:hover, .small-img .icon-right:hover { opacity: .5; }

.small-container {
  width: 310px;
  height: 70px;
  overflow: hidden;
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
}

.small-container div {
  width: 800%;
  position: relative;
}

.small-container .show-small-img {
  width: 70px;
  height: 70px;
  margin-right: 6px;
  cursor: pointer;
  float: left;
}

.small-container .show-small-img:last-of-type { margin-right: 0; }