table of contents is width of longest link

[joyously]

Some of the headings can be long, and the table of contents is not set to a max width, so the long heading can make the table wider than the page content.

It looks like CSS for max-width is needed.
See ​https://developer.wordpress.org/reference/functions/wp_enqueue_script/ for an example.

[joyously]

table of contents is wider than page content

[dufresnesteven]

I've tested this in the new theme (​https://github.com/WordPress/wporg-developer), which should be launched soon-ish, and this issue no longer exists there.

I'll leave this open for now but it shouldn't require any work.