== Background/Goal
In order to move forward with T318016 Codex needs to provide the current in production `font-family` tokens.
WikimediaUI Base currently features:
```lang=css
/* == Typography incl. print properties == */
/* See https://design.wikimedia.org/style-guide/visual-style_typography.html */
/* Font Families */
--font-family-base: var( --font-family-sans );
--font-family-heading-main: var( --font-family-serif );
/* To be deprecated, see T247166. */
--font-family-sans: 'Helvetica Neue', 'Helvetica', 'Liberation Sans', 'Arial', sans-serif;
/* Provide better operating system-specific readability, see T175877. */
/* `system-ui` is currently not an option due to OS/language combination issues, see T175877#4776576. */
--font-family-system-sans: -apple-system, 'BlinkMacSystemFont', 'Segoe UI', 'Roboto', 'Inter', 'Helvetica', 'Arial', sans-serif;
--font-family-sans--fallback: sans-serif;
--font-family-serif: 'Linux Libertine', 'Georgia', 'Times', 'Source Serif Pro', serif;
--font-family-serif--fallback: serif;
/* Provide better operating system-specific monospace stack, see T209915. */
--font-family-monospace: 'Menlo', 'Consolas', 'Liberation Mono', 'Fira Code', 'Courier New', monospace;
--font-family-monospace--fallback: monospace, monospace; /* See T176636. */
```
== User stories
As a developer, I would like to be sure, that my font family definitions achieved by WikimediaUI Base continue to work
== Acceptance criteria or Done
[] Codex features legacy WikimediaUI Base