.iframe-container {
  position: relative;
  width: 100%;
  overflow: hidden;
min-height:2100px; /* Adjust based on your content's length */
  padding-top: 56.25%; /* 16:9 Ratio (9 / 16 = 0.5625) */
}
.iframe-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}