.carousel.fade {
  opacity: 1;
}
.carousel.fade .item {
  transition: opacity ease-out .7s;
  left: 0;
  opacity: 0; /* hide all slides */
  top: 0;
  position: absolute;
  width: 100%;
  display: block;
}
.carousel.fade .item:first-child {
  top: auto;
  opacity: 1; /* show first slide */
  position: relative;
}
.carousel.fade .item.active {
  opacity: 1;
}