.flyer-builder {
  position: relative;
  height: 100%;
}
.flyer-builder iframe,
.flyer-builder .no_iframe {
  width: 100%;
  height: 1200px;
  border: 1px solid #666;
  background-color: #ddd;
  display: block;
}
.flyer-builder .no_iframe > div {
  width: 80%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: normal;
}
@media all and (min-width: 800px) {
  .flyer-builder .btn.btn-block {
    display: inline;
  }
}