Relative includes

[eluser]John_Betong[/eluser]
 
I think that the CSS file should be part of the application.

I have my CSS files in a ./css directory within the application folder.

Code:

<base href="<?= base_url() .APPPATH ?>" />
  <link type="text/css" href="./css/ss_green.css" rel="stylesheet" />

This is ideal for copying/zipping the whole application directory and not having to scratch around for files outside of the application. It works for both localhost and online.