.iZoom {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 99; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgb(0,0,0); /* Fallback color */
    background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}

.zoom-content {
    margin: auto;
    display: block;
    max-height: 75%;
    max-width:100%;
}

#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
}

@-webkit-keyframes zoom {
    from {-webkit-transform:scale(1)}
    to {-webkit-transform:scale(2)}
}
@keyframes zoom {
    from {transform:scale(0.4)}
    to {transform:scale(1)}
}

@-webkit-keyframes zoom-out {
    from {transform:scale(1)}
    to {transform:scale(0)}
}
@keyframes zoom-out {
    from {transform:scale(1)}
    to {transform:scale(0)}
}

.zoom-content, #caption {
    -webkit-animation-name: zoom;
    -webkit-animation-duration: 0.6s;
    animation-name: zoom;
    animation-duration: 0.6s;
}

.out {
  animation-name: zoom-out;
  animation-duration: 0.6s;
}