<!DOCTYPE html>
<html>
<head>
<style type="text/css">
@font-face {
  font-family: libertine;
  src: url(../fonts/LinLibertine_Re-4.7.5.woff) format("woff");
}

@font-face {
  font-family: fontA;
  src: url(../fonts/LinLibertine_Re-4.7.5.woff) format("woff");
  font-feature-settings: "ss05" on;
}

@font-face {
  font-family: fontB;
  src: url(../fonts/LinLibertine_Re-4.7.5.woff) format("woff");
  font-feature-settings: "ss05" off;
}

@font-feature-values libertine {
  @styleset { 
    crossed-doubleu: 5;
    somethingElse: 4;
  }
}

@font-feature-values fontA {
  @styleset { aLtW: 5; }
}

@font-feature-values fontB {
  @styleset { crossedW: 5; several: 1 3 5; }
  @styleset { altW: 4; }
}

@font-feature-values fontB {
  @styleset {
    AlTw: 5;
    defined-for-fontB: 5;
    scriptJ: 3;
  }
}

body {
  font-family: libertine, sans-serif;
  font-size: 800%;
  line-height: 1.2em;
}

/* font-feature-settings: "ss05"; crossed W */

div { margin: 0 20px; }

#test1 {
  font-variant-alternates: styleset(crossed-doubleu);
}

#test2 {
  /* testing case-insensitivity of styleset name */
  font-family: fontB;
  font-variant-alternates: styleset(altW);
}

#test3 {
  /* testing case-insensitivity of styleset name */
  font-family: fontB;
  font-variant-alternates: styleset(ALTW);
}

#test4 {
  /* testing escapes in styleset name */
  font-family: fontB;
  font-variant-alternates: styleset(\41 ltW);
}

#test5 {
  /* testing font-specificity of feature value rule */
  font-family: fontA;
  font-variant-alternates: styleset(defined-for-fontB);
}

#test6 {
  /* testing one feature doesn't affect another */
  font-variant-alternates: styleset(somethingElse);
  font-feature-settings: "ss05" on;
}

#test7 {
  /* testing font-specificity of feature value rule */
  font-family: fontA;
  font-variant-alternates: styleset(scriptJ);
  font-feature-settings: "ss06";
}

#test8 {
  /* testing that an undefined value doesn't affect the results */
  font-family: fontB;
  font-variant-alternates: styleset(scriptJ, somethingUndefined, defined-for-fontB);
}

#test9 {
  /* testing matching of font name with escape */
  font-family: font\62 ;
  font-variant-alternates: styleset(defined-for-fontB);
}

</style>
</head>
<body lang="en">
<div><span id="test1">W</span> <span id="test2">W</span> <span id="test3">W</span></div>
<div><span id="test4">W</span> <span id="test5">W</span> <span id="test6">W</span></div>
<div><span id="test7">W</span> <span id="test8">W</span> <span id="test9">W</span></div>
</body>
</html>