[css-fonts-4] Additional keywords for font-weight?

[BenjaminAster]

Currently, only the numbers 400 (normal) and 700 (bold) have their own font-weight keywords. When wanting to use other font weights (e.g. 600, which is often used as a "not so heavy" alternative to 700/bold), you currently have to use a number for that. I personally think that numbers are very unreadable in this case, especially to newcomers. Seeing a font-weight: 600 declaration somewhere without knowing the exact "boldness" mappings basically gives no information to the reader, making the DX pretty bad. Would it be feasable to add more keywords to font-weight simply as aliases of numbers, e.g.

• thin = 100
• extralight = 200
• light = 300
• medium = 500
• semibold = 600
• extrabold = 800
• heavy = 900

[Loirooriol]

See #4048

[BenjaminAster]

Ah, I didn't see that, thanks!