User blog comment:BertH/Fluid layout is arriving on December 4/@comment-1192804-20131204134019

Fluid removed the backgrounds on like, all my wikis. Backgrounds were hosted on the Wikia.css with this code:

body { background: #000000 url(http://images.wikia.com/ninehourspersonsdoors/images/0/0f/Wiki_background.jpg) top center no-repeat; }

How do I bring them back, without uploading them through Theme Designer? I think the 150kb file limit is way too low.