Font-properties
font properties (font,font-family,font-size,font-style,font-kerning,font-stretch,font-weight,font-size-adjust,line-height)should be used wisely-this includes @font-face at-rule and it's descriptors.what we have left from font properties is font-variant and it;s subproperties and font-feature-settings properties.
now these two properties are about font-features.font-features are specific features that are contained inside the used type-face.they are used seperately from font properties listed above.now these properties are used to enable and use font-features.that is:
what is openttype fonts?
adobe describing opentype fontshow css is used with opentype fonts?
ref-1 ref-2 ref-3 usage note:generaly there are only two css properties that deal with opentype fonts-font-variant & font-feature-settings.as ageneral rule font-variant is used to enable font feature-if failed to do so font-feature-settings is used instead.