.overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    opacity: 0;
    transition: .3s ease;
    background-color: rgba(0, 0, 0, 0.5);
    pointer-events: none;
    margin-left: 15px;
  }
  
  .col-md-6:hover .overlay {
    opacity: 1;
  }
  
  .icon {
    color: white;
    font-size: 100px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    text-align: center;
  }
  
  .fa-user:hover {
    color: #eee;
  }