This style is meant to avoid the restrictions of 20130603 style applied on userstyles.org http://forum.userstyles.org/discussion/35921/feedback-requested restoring full width. Optionally, you are able to choose higher (or lower) than standard width limits for large screens in which you may not want to use such a huge width.

Width change affects also to edit pages and their coding areas, this style avoids line wrapping on that areas and allows to adjust their heights. Width change is also applied to forum optionally.

It sets full height for notes, displays advanced search items optionally (adapted from http://freestyler.ws/style/69372/userstyles-org-wider-search-always-show-options without sidebar resizing), allows to right align screenshots box and to remove borders on various tables added on 20170308, as seen in the screenshot. Also allows to reveal metadata on search results (adapted from userstyles's userstyles's Generic Ad Blocker).

Probably you'll also find useful http://freestyler.ws/style/153278/009-userstylesbeautify-catcat520 to fix an issue in styles settings area brought up by late 201702 changes in webpage, you can see it applied in the screenshots (condensed/default for the 2 first options).

Other styles for userstyles.org interesting to me:
http://freestyler.ws/style/146649/userstyles-updating-without-reloading-the-page
http://freestyler.ws/style/132148/hidden-metadata-revisited-userstyles

20170312 Added options to adjust forum width and to uncover metadata on search results.
20170311 Fix for info/settings area misaligned when screenshots box is in default position.
20170309 Added option for removing new borders on various tables, removes code for full height codebox (now site default), avoided line wrapping on coding boxes of edit pages and added option for adjusting their heights.
20170301 Fix to fit recent DOM changes.