.contents {
  ol {

    padding: 0 .125rem .3125rem .625rem;
    text-align: left;

    >ol {
      padding-left: 0;
    }
  }

  .toc-item {
    font-size: $font-size-medium;
    line-height: 1.8;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .toc-child {
    display: none;
  }

  .active>.toc-child {
    display: block;
  }

  .current>.toc-child {
    display: block;

    >.toc-item {
      display: block;
    }
  }

  .active>a {
    color: var(--primary-color);
  }

  .current>a {
    color: var(--primary-color);

    &:hover {
      color: var(--primary-color);
    }
  }
}