ui-serif, ui-sans-serif, ui-monospace and ui-rounded values for font-family

Allows more control when choosing system interface fonts

system-ui value for font-family

Value for `font-family` that represents the default user interface font.

javascript built-in: intl: locale: getnumberingsystems

javascript built-in: intl: locale: numberingsystem

javascript built-in: intl: relativetimeformat: resolvedoptions: numberingsystem