When fluid layout arrives on your Wikia community, there will be some changes to the underlying structure of the site design. For communities that have only done customizations through Theme Designer, nothing will have to be changed when fluid layout is released.
CSS class changes have been minimal during the shift to fluid layout, but admins who have heavily customized CSS on their communities may need to make some minor adjustments. The great thing about the Wikia community is that we've got lots of knowdledgable users who are willing to help others! So I'd like to invite any "CSS experts" that have already worked with fluid layout to offer tips, suggestions and examples on this thread.
Also note that the Special:CSS feature will be enabled along with fluid layout. The updated editing interface is what you'll see when editing the Wikia.css file. As always, when considering design changes to your community, remember to refer to Wikia's customization policy and to contact staff if you have any questions about what's permitted.
For more tips on getting ready for fluid layout, see also: