mozilla-release/layout/reftests/text-decoration/skip-ink-cjk-1-ref.html

<!DOCTYPE html>
<html lang="ja">
<meta charset="utf-8">
<style>
body {
  font: 16px/2 sans-serif;
}
.test {
  font: 32px sans-serif;
  text-decoration: 2px red underline;
  text-underline-offset: 1px;
}
span {
  text-decoration-skip-ink: none;
}
</style>
<div>The underline should skip descenders on the English but not the Japanese:</div>
<div class=test>skipping <span>土砂災害警戒情報</span> skipping</div>