hiragana-katakana-kerning-notref.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>CSS Reference: Hiragana/Katakana kerning</title>
    <style>
      @font-face {
        font-family: "Noto Sans JP";
        src: url(resources/NotoSansJP-kana_test-subset.otf);
      }

      p {
        position: absolute;
        top: 0;
        left: 0;

        font-size: 6em;
        font-family: "Noto Sans JP";
        font-feature-settings: "palt" on;
        font-kerning: none;

        margin: 1em;
      }

      .no-kerning-red {
        color: red;
      }

      .no-kerning-green {
        color: green;
        mix-blend-mode: multiply;
      }
    </style>
  </head>
  <body>
    <span>
      RED or GREEN text is visible if kerning is applying correctly, with only
      BLACK otherwise:
    </span>
    <p class="no-kerning-red">すペ</p>
    <p class="no-kerning-green">すペ</p>
  </body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-fonts/hiragana-katakana-kerning-notref.html