There is nothing in the standalone.xml file that has been customized other than the data source.
Our code is old, and I don't know much about how jsp works. However, I would not think that the jsp organization would impact things. However, I could be wrong. The css files are located below the jsp files in a child directory. The war file that contains the jsp and css is delivered as part of an .ear file.
The CSS files deliver as text/html even if the requests comes from an .html file.
Perhaps some of this information may give you an idea of where to direct me to spend my time.
Thanks,
Jack