blockquote {
  border-left: 1px dotted;
  margin-left: 30px;
  padding-left: 10px;

  &::before {
    content: "◆";
    position: absolute;
    transform: translate(calc(-0.8ch - 10px), -12px);
  }

  padding-top: 6px;
  padding-bottom: 2px;
  margin-top: 1em;
  margin-bottom: 1em;
  > :first-child { margin-top: 0; }
  > :last-child { margin-bottom: 0; }
}