Project hosted

Hello 

I have a project that works perfectly on my computer, then
the same project on a web space hosted in Hostgator doesn't work.

I have an index.html page with a link to the CI Project, go to welcome page and it works,
but doesn't load picture. Then clicking on navbar to other pages i miss all contents.

Always the same message error 404 page not found.

Can somebody say to me where is my error?

Thank You in advance.

Emilio Franco