Comment 2 for bug 1895409

The initial report doesn't make it clear what the specific problem is, so I'm assuming it is CSS validation errors.

The W3C CSS Validator shows 5 errors, which all come from one file:
https://assets.ubuntu.com/v1/vanilla-framework-version-1.8.0.min.css

I verified (via archive.org) that the same file was referenced at the time of this bug's creation.

That file is not specific to Xubuntu - it appears to be referenced by all pages of all releases of all flavors on cdimage.ubuntu.com. This bug should not be assigned to Xubuntu Developers.