compiled from https://helpx.adobe.com/typekit/using/open-type-syntax.html
font-variant-caps: small-caps;
-moz-font-feature-settings: "smcp";
-webkit-font-feature-settings: "smcp";
font-feature-settings: "smcp";
font-variant-caps: all-small-caps;
-moz-font-feature-settings: "c2sc", "smcp";
-webkit-font-feature-settings: "c2sc", "smcp";
font-feature-settings: "c2sc", "smcp";
-moz-font-feature-settings: "swsh";
-webkit-font-feature-settings: "swsh";
font-feature-settings: "swsh";
-moz-font-feature-settings: "salt";
-webkit-font-feature-settings: "salt";
font-feature-settings: "salt";
font-variant-numeric: oldstyle-nums;
-moz-font-feature-settings: "onum";
-webkit-font-feature-settings: "onum";
font-feature-settings: "onum";
font-variant-numeric: proportional-nums;
-moz-font-feature-settings: "pnum";
-webkit-font-feature-settings: "pnum";
font-feature-settings: "pnum";
font-variant-numeric: diagonal-fractions;
-moz-font-feature-settings: "frac";
-webkit-font-feature-settings: "frac";
font-feature-settings: "frac";
font-variant-numeric: ordinal;
-moz-font-feature-settings: "ordn";
-webkit-font-feature-settings: "ordn";
font-feature-settings: "ordn";
-moz-font-feature-settings: "ss01";
-webkit-font-feature-settings: "ss01";
font-feature-settings: "ss01";
font-kerning: normal;
-moz-font-feature-settings: "kern";
-webkit-font-feature-settings: "kern";
font-feature-settings: "kern";
font-variant-position: super;
-moz-font-feature-settings: "sups";
-webkit-font-feature-settings: "sups";
font-feature-settings: "sups";
font-variant-position: sub;
-moz-font-feature-settings: "subs";
-webkit-font-feature-settings: "subs";
font-feature-settings: "subs";