Widens content, but does not position content correctly horizontally
Using Firefox 57, and Greasemonkey 4.0: The FB content column is made wider, but it does not position correctly in the browser window. If the browser is very wide on the screen (wider than 1500 pixels), then the content can be seen. But there is a corresponding huge gap between the right side of the content and the right sidebar. If the browser windows is re-sized any narrower, the content is truncated on the left size, but the big gap remains fixed.
If this code could center the content and fill the gap, it would be perfect.
Widens content, but does not position content correctly horizontally
Using Firefox 57, and Greasemonkey 4.0: The FB content column is made wider, but it does not position correctly in the browser window. If the browser is very wide on the screen (wider than 1500 pixels), then the content can be seen. But there is a corresponding huge gap between the right side of the content and the right sidebar. If the browser windows is re-sized any narrower, the content is truncated on the left size, but the big gap remains fixed.
If this code could center the content and fill the gap, it would be perfect.