Force absolute path for CSS on one page (error page)

[eecue]

I have an error page that I'm using with my CDN as my default error page. It works fine when the error happens at the top level of my site, but because the CSS (and favicon) is loading via a relative path the page is unstyled when showing an error for a path with a directory... so /asdf shows the error property but /somedir/asdf doesn't. How can I force the absolute path for the CSS in src/+error.svelte