css/css-fonts/font-size-adjust-text-orientation.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>font-size-adjust and text-orientation</title>
<link rel="author" title="ChangSeok Oh" href="mailto:changseok@webkit.org" />
<link rel="help" href="https://www.w3.org/TR/css-fonts-5/#font-size-adjust-prop" />
<link rel="match" href="font-size-adjust-text-orientation-ref.html" />
<meta name="assert" content="Test checks whether text-orientation affects font-size-adjust.">
<style>
@font-face {
  font-family: IcTestFullWidth;
  src: url(../css-values/resources/IcTestFullWidth.woff2);
}
div {
  font-family: IcTestFullWidth;
  font-size: 40px;
  font-size-adjust: ic-width 1.0;
  writing-mode: vertical-rl;
  text-orientation: upright;
}
</style>
<div>あ</div>