.recommend-popup-frame {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index:20;
}

.recommend-popup-frame iframe {
  display: block;
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  max-width: 600px;
  padding: 0;
  margin: 0 auto;
  border: solid 1px #333;
  box-sizing: border-box;
  background-color: white;
}