.markdown-body {
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    margin-top: $markdown-spacer-4;
    margin-bottom: $markdown-spacer-3;
    font-weight: $markdown-font-weight-bold;
    line-height: 1.25em;
    .octicon-link {
      color: #000;
      vertical-align: middle;
      visibility: hidden;
    }
    &:hover .anchor {
      text-decoration: none;
      .octicon-link {
        visibility: visible;
      }
    }
    tt,
    code {
      font-size: inherit;
    }
  }
  h1 {
    padding-bottom: 0.3em;
    font-size: 2em;
    border-bottom: 1px solid lighten($gray-200, 3%);
  }
  h2 {
    padding-bottom: 0.3em;
    font-size: 1.5em;
    border-bottom: 1px solid lighten($gray-200, 3%);
  }
  h3 {
    font-size: 1.25em;
  }
  h4 {
    font-size: 1em;
  }
  h5 {
    font-size: 0.875em;
  }
  h6 {
    font-size: 0.85em;
    color: $gray-500;
  }
}