.modal {
    display: none;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: #000;
    background-color: rgba(0, 0, 0, 0.9);
}

.modal > div {
    display: table-cell;
    vertical-align: middle;
}

/* Animation */
.modal-content, #caption {
    animation-name: zoom;
    animation-duration: 0.6s;
}
@keyframes zoom {
    from {transform: scale(0)}
    to   {transform: scale(1)}
}

.modal-content {
    margin: auto;
    display: block;
    width: 80%;
    /*max-width: 700px;*/
}

.modal .caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: #ccc;
    padding: 10px 0;
    height: 60px;
}

.modal > .close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.modal > .close:hover,
.modal > .close:focus {
    color: #bbb;
    text-decoration: none;
}