Hi,
I don't know your version of SAS, but:
In SAS 9.4 you have a good Web Server where you can create any public static html page with static files (CSS, images, js).
In previous versions, if you have an Apache server in front of your Web application servers (jboss, weblogic or websphere), you can do the same.
And if you don't, you will need to publish those as part of a customized web application.