.megamenu-image {
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
  right: 0;
}
.megamenu-image-item {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  visibility: hidden;
  opacity: 0;
}
.megamenu-image-item.active {
  visibility: visible;
  opacity: 1;
}