User blog comment:DaNASCAT/Technical Update: April 8, 2015/@comment-452-20150409135724

There have been several changes to the global-navigation which are not in the CSS report. Unfortunately, as I was not expecting changes to it, I did not keep a "yesterday" page open to compare.

edit:
 * https://github.com/Wikia/app/commit/a09eb035ba60d683489e847d6fda43f745baeb7b#diff-6fa83d5fd12e867bf7a1c5b0190a24ad

  has been replaced with  , so any styles which targeted .page-width will need to be updated.

edit: I've confirmed that updating that class fixes my CSS, others may run into additional problems.