.ytpt-product-popup-bg {
  content: '';
  background: #17171752;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 999;
  display: none;
}

.ytpt-product-app.ytpt-app.active + .ytpt-product-popup-bg {
  display: block;
}