The "font-weight" CSS Property

This property sets the weight (or boldness) of a font. Note that some fonts are not available in all weights.

Values for "font-weight"
CSS Level	Value
CSS Fonts Level 4	"<font-weight-absolute> \| bolder \| lighter", where <font-weight-absolute> = "[normal \| bold \| <number [1,1000]>]"
CSS Fonts Level 4 (in @font-face)	"auto \| <font-weight-absolute>{1,2}", where <font-weight-absolute> = "[normal \| bold \| <number [1,1000]>]"

Notes

"100" is thin, "400" is the same as "normal", "700" is the same as "bold", and "900" is black/heavy.

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