In brief
font-variant controls typographic variants, including small-caps. With a suitable font, this uses small-cap forms rather than simply replacing the content with uppercase characters.
Useful to know
font-variant controls typographic variants, including small-caps. With a suitable font, this uses small-cap forms rather than simply replacing the content with uppercase characters. [1]
Check support and readability in the chosen family. A typographic variant is a presentation choice; the original text and its spelling remain separate from that presentation.
Sources
For further detail and to check the information: