.overlay {
    position: fixed;
    width: 100%;
    height: 100%;
    z-index: 1000;
    top: 0;
    left: 0;
    display: table;
}

.shade {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: #000;
    opacity: .75;
    filter: alpha( opacity=75 );
}

.overlay-popup {
    position: relative;
    display: table-cell;
    vertical-align: middle;
}

.overlay-popup-content {
    width: 698px;
    background: #fff;
    margin: 0 auto;
    position: relative;
    padding: 44px 50px 28px;
}