.avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  vertical-align: middle;
}
.rectangular {
  width: 32px;
  height: 32px;
  background: rgba(0, 0, 0, 0.04);
}
.iframe-hack {
  width: 100%;
  height: 500px;
}