Per http://lists.wikimedia.org/pipermail/wikitech-l/2011-October/055704.html and http://support.microsoft.com/kb/262161 , the 32nd <style> tag and beyond are ignored by IE. RL should combine <style> tags as much as it can to prevent the page from containing more than 31 style tags.
Version: 1.20.x
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=47277