.promo-card img {
  height: 100%;
  width: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -webkit-transition: opacity 150ms linear;
  transition: opacity 150ms linear;
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
}