Question about articles, can you help me?

Is there a limit to how long an article can be, if so can anyone tell me what this limit is? I'm writing a fan fiction and would like to know if my chapter's will fit or if I would end up having to cut them in half to be up loaded in parts. This is something I would like to know beforehand for the obvious convenience. So far I've up loaded two chapters and both were 10 pages long copied and pasted from my Word Program with no trouble, but my third chapter looks like it will be a bit longer, so I thought it was better to ask. So please, any help would be graciously appreciated.