CSS file Not Found

Hi,
I’m getting an error “404 Not Found” with the CSS file used by my webfont.

The CSS file is loaded properly in the home page of my website: https://cochesaurus.com

But when you click one of the posts titles, the link to the stylesheet is broken, and I get an error, e.g.
“NetworkError: 404 Not Found – https://cochesaurus.com/2012/03/mudjungle/MyFontsWebfontsKit.css”

The CSS file is located in the root folder of my website.

Thanks for consider my problem. Any help is appreciated.

Best regards