.ihs-container {
  position: relative;
  display: inline-block;
  overflow: hidden;
}

.ihs-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  transition: opacity 0.5s ease-in-out;
}

.ihs-container img.ihs-front {
  opacity: 1;
  z-index: 2;
}

.ihs-container img.ihs-back {
  opacity: 0;
  z-index: 1;
}

.ihs-container:hover img.ihs-front {
  opacity: 0;
}

.ihs-container:hover img.ihs-back {
  opacity: 1;
}