If you want to have the product designer to stretch to the full-size when using it in a lightbox as in this example, you can easily achieve that with some CSS tweaks.


.fpd-modal-product-designer.fpd-modal-overlay>.fpd-modal-wrapper {
 padding: 60px 0 0 !important;
}
.fpd-modal-wrapper > .fpd-container {
height: 100% !important;
}
.fpd-modal-product-designer .fpd-done {
    position: absolute;
    top: 0;
    left: 10px;
}
.fpd-modal-product-designer .fpd-modal-price {
    position: absolute;
    top: 0;
    left: 100px;
}