.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;
}

}