message: fix: style order
diff: .markdown-body h1,
  .markdown-body h2 {
  + border-bottom: 1px solid var(--gray-2);
  font-weight: 600;
  padding-bottom: 0.3em;
  - border-bottom: 1px solid var(--gray-2);
  }
  .markdown-body h2 {
  .markdown-body h4,
  .markdown-body h5,
  .markdown-body h6 {
  - margin-top: var(--space);
  - margin-bottom: var(--space-sm);
  font-weight: 600;
  line-height: 1.25;
  + margin-bottom: var(--space-sm);
  + margin-top: var(--space);
  }
  .markdown-body h1 {
  .markdown-body h1,
  .markdown-body h2 {
  - padding-bottom: 0.3em;
  border-bottom: 1px solid var(--gray-2);
  + padding-bottom: 0.3em;
  }
  .markdown-body h2 {
  }
  .markdown-body h6 {
  - font-size: 0.85em;
  color: #6a737d;
  + font-size: 0.85em;
  }
  .markdown-body a {
  