[data-st-if] {
  position: relative;
  border: 1px dashed #3bb0c9; padding: 4px;
}
[data-st-comment]::before {
  content: attr(data-st-comment);
  //opacity: 0.5;
  font-size: 12px;
  line-height: 20px;
  position: absolute;
  right: 0;
  top: 0;
  //margin-top: -21px;
  margin-left: -1px;
  background-color: #f1f1f1;
  color: #252222;
  border-bottom: 1px dashed #3bb0c9;
  border-left: 1px dashed #3bb0c9;
  border-right: 0;
  border-top: 0;
  padding: 0 5px;
}