.tiny-pageembed .mce-shim {
  background: url(data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7);
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

.tiny-pageembed[data-mce-selected="2"] .mce-shim {
  display: none;
}

.tiny-pageembed {
  display: inline-block;
  position: relative;
}

// The suffixed classes are all to create a responsive iframe for the
// pageembed plugin, with the suffixes being the ratio of the iframe

.tiny-pageembed--21by9,
.tiny-pageembed--16by9,
.tiny-pageembed--4by3,
.tiny-pageembed--1by1 {
  display: block;
  overflow: hidden;
  padding: 0;
  position: relative;
  width: 100%;
}

.tiny-pageembed--21by9 {
  padding-top: 42.857143%;
}

.tiny-pageembed--16by9 {
  padding-top: 56.25%;
}

.tiny-pageembed--4by3 {
  padding-top: 75%;
}

.tiny-pageembed--1by1 {
  padding-top: 100%;
}

.tiny-pageembed--21by9 iframe,
.tiny-pageembed--16by9 iframe,
.tiny-pageembed--4by3 iframe,
.tiny-pageembed--1by1 iframe {
  border: 0;
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}