html.site-modal-open,
body.site-modal-open {
  overflow: hidden !important;
  overscroll-behavior: none;
}

body.site-modal-open {
  position: fixed;
  width: 100%;
  left: 0;
  right: 0;
}

.site-modal {
  overflow: hidden;
  overscroll-behavior: contain;
}

.site-modal__viewport {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: contain;
}