Processors used: ReSpec, Bikeshed, XMLspec+XSLT, custom

1. Make it work on Mobile.
    * Reduce side margins
    * Switch logos to SVG
    * Allow wrapping in <pre> blocks?
    * Style for multiline (wrapped) headings
    * Reduce use of indentation for e.g. WebIDL
    * Require viewport meta

2. Improve Print output
    * Definitely wrap all the <pre> blocks
    
3. Special Styling Blocks
    * WebIDL
    * CSS propdef
    * Element definitions
    
    * Notes
    * Issues
    * Examples and code samples
    * Best Practices

4. Available Navigation
    * Side-by-side ToC and content
    * Back to Top link

5. WCAG Guidelines
    * Color contrast http://www.d.umn.edu/~lcarlson/wcagwg/tests/css3_spec_color.html
       -> increase contrast on note/example markers
    * ARIA roles for stuff

6. Miscellaneous Notes
    * :target styling
        http://dev.w3.org/webfonts/WOFF2/spec/#conform-mustNotDuplicateTables
    * :hover styling on index tables
        http://www.w3.org/TR/WOFF20ER/#appendixB
    * hyperlink styling not too intrusive
        https://www.w3.org/XML/Group/qtspecs/specifications/xslt-30/html/Overview.html
    * diff styling not too jarring 
        https://www.w3.org/XML/Group/qtspecs/specifications/xslt-30/html/Overview-diff.html
    * reduce top-of-page white space
    * long centered figure captions are hard to read
    * advisement styling needs to be more general, e.g. for best practices

Markup change requirements:
  * <section role=navigation id=toc> around toc
  * back-to-top link
  * viewport directive