#markdown-toc {
  background: var(--toc-bg);
  border: var(--toc-border);
  border-radius: var(--toc-border-radius);
  display: inline-block;
  padding-top: 1em;
  padding-right: 1em;
  padding-bottom: 1em;

  &::before {
    content: "目次";
    display: block;
    font-weight: bold;
    margin-left: calc(1em - 40px);
    padding-bottom: 0.5em;
  }
}