To change styles:

styles.css is in the folder .ciwiki/configuration and you can edit this file to change the police, color...
If you delete it, ciwiki will create a new one with the default values.

To change or to translate text or
to modify field position in the page: 

You can edit htm files located in the folder .ciwiki/configuration. 
These files are created during the first run of ciwiki and they are read when ciwiki is restarted.
If you delete a htm file, ciwiki will create a new one with the default values.
These files are coded in html.

Description:

EditHeader.htm  : Head of wiki page displayed (login link is present).
PageHeader.htm  : Head of the page edited.
ShortHelp.htm   : Help above the text input.
EditForm.htm    : Text input (bloc) and buttons to edit the page.
CreateForm.htm  : To enter name of the new page and to select a template (eventually).
DeleteForm.htm  : Confirmation to delete a page.
