it's possible modify styles from AD FS en Windows Server 2012 R2 login page?

we are working in customizing login page from AD FS en Windows Server 2012 R2

Changes work correctly in a local navigator, but when load changes to server, we don't see any image and some fonts fail too.

It's just to know if anyone has really make a great change in login page only changes CSS file.

https://learn.microsoft.com/en-us/windows-server/identity/ad-fs/operations/change-the-company-logo-on-the-ad-fs-sign-in-page

There are a whole lot of tips and tricks described at ADFS : Continuing the Login and Home Realm Discovery (HRD) and Change Password customisation adventure.

The css specific reference is here.