.middle {
  transition: .5s ease;
  opacity: 0;
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  text-align: center;
}
.hov:hover img {
  -webkit-filter: grayscale(100%); /* Safari 6.0 - 9.0 */
  filter: grayscale(100%);
}
.hov:hover .middle {
  opacity: 1;
}
.text {
  background-color: #c62828;
  color: white;
  padding: 16px 32px;
}