#slide-container, #multiple-slide-container {
  position: relative;
  overflow: hidden;
  margin: 10px auto;
  width: 960px;
  height: 540px;
}

.item, .item-triple {
  position: absolute;
  top: 0;
  left: 0;
  display: none;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.foreground {
  position: absolute;
}

.background {
  position: absolute;
  overflow: hidden;
}