.vignette-fade {
  position: relative;
  overflow: visible;
}
.vignette-fade img {
  display: block;
  width: 100%;
  height: auto;
  -webkit-mask-image:
    linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%),
    linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
  mask-image:
    linear-gradient(to right, transparent 0%, black 15%, black 85%, transparent 100%),
    linear-gradient(to bottom, transparent 0%, black 15%, black 85%, transparent 100%);
  -webkit-mask-composite: destination-in;
  mask-composite: intersect;
}