.pdp-contact-sales { position: fixed; inset: 0; z-index: 9999998; display: none; }
.pdp-contact-sales[open] { display: block; }
.pdp-contact-sales__backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.pdp-contact-sales__box {
  position: relative; margin: 5vh auto 0; max-width: 560px; width: calc(100% - 2rem);
  max-height: 90vh; overflow-y: auto; background: #fff; padding: 2rem;
}
.pdp-contact-sales__close {
  position: absolute; top: .75rem; right: .75rem; background: none; border: 0;
  cursor: pointer; line-height: 1; padding: .5rem;
}
.pdp-contact-sales__frame { min-height: 320px; }
@media (max-width: 640px) {
  .pdp-contact-sales__box { margin-top: 0; height: 100vh; max-height: 100vh; }
}