#container-chatterbox {
  z-index: 999999;
  position: fixed;
  right: 10px;
  bottom: 10px;
  max-width: 491px;
  max-height: 680px;
  width: 80px;
  height: 80px;
}

#container-chatterbox iframe {
  border: none;
  width: 100%;
  height: 100%;
}

@media (max-width: 490px) {
  #container-chatterbox {
    max-height: 100%;
    right: 0;
    bottom: 0;
  }
}