.column-1-iframe {
  position: relative;
  padding-top: 44%;
  line-height: 0
}
@media screen and (max-width:750px) {
  .column-1-iframe {
    padding-top: 56.25%
  }
}
.column-1-iframe iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%
}