Web Design in a Nutshell, 3rd Edition

Text Transformation (Capitalization)

The font-variant property uses capital letter shapes for lowercase letters, but doesn’t really affect the capitalization of the text, only the character shapes of the font. There is another CSS property, text-transform, for altering the capitalization of text without needing to retype it in the source document. It works by toggling between the upper- and lowercase characters as specified.