_topic.scss

.topic__node {
  @extend .ui.red.label;
  @extend .zeta;
  position: relative;
  left: 1.55rem;
  float: right;
  margin: 0.2rem 0;
  padding: 0 1em 0.1em 0.8em;
  border-color: rgba(0, 0, 0, 0.15);
  border-radius: 4px 0px 0px 4px;
  text-transform: none;

  &:after {
    content: "";
    position: absolute;
    top: 100%;
    right: 0;
    width: 0;
    height: 0;
    border-top: 0em solid transparent;
    border-right: 0em solid transparent;
    border-left: 1em solid;
    border-left-color: inherit;
    border-bottom: 1em solid transparent;
  }
}