.animated:hover .pulse  {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0s linear 0.3s;
}
.animated:hover .back { 
  opacity: 1;
  position: absolute;
  top: 0px;
  left: 0px;
  visibility: visible;
  transition: opacity 0.3s, visibility 0s linear 0.3s;
}