css3 can specify opentype small caps (given the 'smcp' feature in the font replaces glyphs with proper small caps glyphs) by using "font-variant-caps: small-caps;", which is the recommended way, or "font-feature-settings: 'smcp';", which is (as of may 2014) the most widely used way. if the font does not have small-cap glyphs, lowercase letters are displayed.