.modal{
    margin: 50px;
}
.vertical-alignment-helper {
    display:table;
    height: 100%;
    width: 100%;
    pointer-events:none;
}
.vertical-align-center {
    display: table-cell;
    vertical-align: middle;
    pointer-events:none;
}
.modal-content {
    width:inherit;
    max-width:inherit;
    height:inherit;
    margin: 0 auto;
    pointer-events:all;
}