The MDN page titled Sections and Outlines of an HTML5 Document includes the following warning:
There are currently no known implementations of the outline algorithm in graphical browsers or assistive technology user agents […] authors are advised to use heading rank (
h1–h6).
Given the speed at which CSS3 is implemented, this is disappointing. Visitors to this site use modern, capable browsers; it’s a shame not to be able to use the most logical document outline.
