/* html,
body {
  margin: 0px;
  padding: 0px;
  height: 100%;
} */

#heatmapArea {
  position: relative;
  float: left;
  width: 100%;
  height: 100%;
  z-index: 1000;
  border: 1px dashed black;
}

#iframe {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
  border: 1px solid green;
}