asciidoctor/asciidoctor — pull request #860 by neher (2014-01-14 20:54:41+00:00)
Title: Fix transparent background toc

When the content is too wide for the webpage, browsers automatically let you scroll the content.
You can achieve this by adding very wide tables.

When we scroll all to way to the right, the content was visible underneath the table of contents.
This patch fixes that issue.