.instructor-display-picture {
  width: 100%;
  position: relative;
  padding-top: 100%;
}

img.instructor-display-picture__img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.instructor-display-picture::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("../../images/thumbnail_background_off.png");
  background-size: cover;
  background-position: center;
  pointer-events: none;
  z-index: 1;
}

.instructor-display-picture:hover::before {
  background-image: url("../../images/thumbnail_background_on.png");
}