.thumbnail {
  position: relative;
  display: inline-block;
}

.image-desciption {
  position: absolute;
  left: 0;
  width: 100%;
  color: black;
  background-color: rgba(255, 255, 255, 0.5);
  text-align: center
}

.thumbnail {
  position: relative;
  display: inline-block;
}

.image-desciption {
  position: absolute;
  left: 0;
  width: 100%;
  color: black;
  background-color: rgba(255, 255, 255, 0.5);
  text-align: center;
  display: none;
}

.thumbnail:hover .image-desciption {
  display: inline-block;
}

Add hover effect to images
Add hover effect to images
