font-variant-east-asian
The font-variant-east-asian CSS property controls the use of alternate glyphs for East Asian scripts, like Japanese and Chinese.
{{InteractiveExample("CSS Demo: font-variant-east-asian")}} 
font-variant-east-asian: normal;
font-variant-east-asian: ruby;
font-variant-east-asian: jis78;
font-variant-east-asian: proportional-width;
<section id="default-example">
  <div id="example-element">
    <p>
      JIS78とJIS83以降では、檜と桧、籠と篭など、一部の文字の入れ替えが行われている。また、「唖然」や「躯体」などの書体が変更されている。
    </p>
  </div>
</section>
section {
  font-family:
    "YuGothic Medium", "YuGothic", "Yu Gothic Medium", "Yu Gothic", sans-serif;
  margin-top: 10px;
  font-size: 1.5em;
}
Syntax
font-variant-east-asian: normal;
font-variant-east-asian: ruby;
font-variant-east-asian: jis78; /* <east-asian-variant-values> */
font-variant-east-asian: jis83; /* <east-asian-variant-values> */
font-variant-east-asian: jis90; /* <east-asian-variant-values> */
font-variant-east-asian: jis04; /* <east-asian-variant-values> */
font-variant-east-asian: simplified; /* <east-asian-variant-values> */
font-variant-east-asian: traditional; /* <east-asian-variant-values> */
font-variant-east-asian: full-width; /* <east-asian-width-values> */
font-variant-east-asian: proportional-width; /* <east-asian-width-values> */
font-variant-east-asian: ruby full-width jis83;
/* Global values */
font-variant-east-asian: inherit;
font-variant-east-asian: initial;
font-variant-east-asian: revert;
font-variant-east-asian: revert-layer;
font-variant-east-asian: unset;
Values
- 
normal- : This keyword leads to the deactivation of the use of such alternate glyphs.
 
 - 
ruby- : This keyword forces the use of special glyphs for ruby characters. As these are usually smaller, font creators often designs specific forms, usually slightly bolder to improve the contrast. This keyword corresponds to the OpenType values 
ruby. 
 - : This keyword forces the use of special glyphs for ruby characters. As these are usually smaller, font creators often designs specific forms, usually slightly bolder to improve the contrast. This keyword corresponds to the OpenType values 
 - 
<east-asian-variant-values>- 
: These values specify a set of logographic glyph variants which should be used for display. Possible values are:
Keyword Standard defining the glyphs OpenType equivalent jis78JIS X 0208:1978 jp78jis83JIS X 0208:1983 jp83jis90JIS X 0208:1990 jp90jis04JIS X 0213:2004 jp04simplifiedNone, use the simplified Chinese glyphs smpltraditionalNone, use the traditional Chinese glyphs trad 
 - 
 - 
<east-asian-width-values>- : These values control the sizing of figures used for East Asian characters. Two values are possible:
proportional-widthactivating the set of East Asian characters which vary in width. It corresponds to the OpenType valuespwid.full-widthactivating the set of East Asian characters which are all of the same, roughly square, width metric. It corresponds to the OpenType valuesfwid.
 
 - : These values control the sizing of figures used for East Asian characters. Two values are possible:
 
Formal definition
{{cssinfo}} 
Formal syntax
{{csssyntax}} 
Examples
Setting East Asian glyph variants
This example require font “Yu Gothic” installed in your OS, other fonts may not support OpenType features.
HTML
<table>
  <thead></thead>
  <tbody>
    <tr>
      <th>normal/jis78:</th>
      <td>麹町</td>
      <td class="jis78">麹町</td>
    </tr>
    <tr>
      <th>normal/ruby:</th>
      <td>しんかんせん</td>
      <td class="ruby">しんかんせん</td>
    </tr>
    <tr>
      <th>normal/traditional:</th>
      <td>大学</td>
      <td class="traditional">大学</td>
    </tr>
  </tbody>
</table>
CSS
tbody {
  border: 0;
}
td {
  font-family: "Yu Gothic", fantasy;
  font-size: 20px;
}
th {
  color: grey;
  padding-right: 10px;
}
.ruby {
  font-variant-east-asian: ruby;
}
.jis78 {
  font-variant-east-asian: jis78;
}
.traditional {
  font-variant-east-asian: traditional;
}
Result
{{EmbedLiveSample('Setting_East_Asian_glyph_variants')}} 
Specifications
{{Specifications}} 
Browser compatibility
{{Compat}}