It eliminates the sidebar, freeing some space into which I’ve expanded the main forum area.

This makes it both wider and removes the pixel-constraint (it’s now 44em) – so you can now ctrl-mousewheel that text to your heart’s content.

Made the Masthead limit to 50px height so there’s less scrolling to do on each pageload, and shifted the poststuff timestamp to the right too, so you can more easily see the end of post.

Limited to forum listing and reading pages only, the homepage and profiles are excluded.