Changed description from h3 to h2 to match the other header
Created api page classes for consistent styling
Add styles for info-bar section
Wrapped pre tags for code not to go off of screen
If a document provided a title jsdoc tag then its h1
element was being rendered incorrectly as a markdown
paragraph.
This change renders the title as a markdown h1 tag
directly.
Fixes#16099
Peter Bacon Darwin
Stefanie Fluin