5.0.0
…as long as identifiers are concerned. > All CSS syntax is case-insensitive within the ASCII range (i.e., [a-z] and [A-Z] are equivalent) (http://www.w3.org/TR/CSS21/syndata.html#characters)
…as long as identifiers are concerned. > All CSS syntax is case-insensitive within the ASCII range (i.e., [a-z] and [A-Z] are equivalent) (http://www.w3.org/TR/CSS21/syndata.html#characters)