#myImg {
    border-radius: 5px;
    cursor: pointer;
    transition: 0.3s;
    display: block;
}
#myImg:hover {opacity: 0.7;}
.modal {
    display: none;
    position: fixed;
    z-index: 99;
    padding-top: 100px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.9);
}
.modal-content {
    margin: auto;
    display: block;
    height:100vh;

}
#caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 150px;
}
@-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)}
}
.modal-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;
}
@media only screen and (max-width: 700px){
    .modal-content {
        width: 100%;
    }
}