Hello,
you need to add custom css code at the css file your template
.ba-modal-body.embed-code{
height: 100vh;
left: 0;
position: absolute;
top: 0;
width: 100vw;
}
.ba-modal .embed-code .modal-image.embed {
position: static !important;
padding: 0!important;
}
Regards,
Vyacheslav, Balbooa.com