css/css-writing-modes/writing-mode-vrl-001-manual.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>writing mode:vertical-rl, vertical lines</title>
<link rel="author" title="Richard Ishida" href="mailto:ishida@w3.org"/>
<link rel="help" href="https://drafts.csswg.org/css-writing-modes-3/#block-flow"/>
<meta name="assert" content="writing-mode:vertical-rl will display a line of text vertically."/>
<style type="text/css">
@font-face {
    font-family: "webfont";
    src: url("/fonts/mplus-1p-regular.woff") format("woff");
    font-weight: normal;
    font-style: normal;
    }
.test, .ref { font-family: webfont, serif; font-size: 24px; height: 300px; width: 300px; }
.test span { background-color:orange; color:orange;  }
</style>
<!-- this is the test -->
<style type="text/css">
.test { writing-mode: vertical-rl; }
</style>
</head>
<body>
<p class="instructions" dir="ltr">Test passes if you see a tall, thin orange rectangle.</p>
<div class="test">
<span lang="zh-hans">国际化活动万维网联盟</span>
</div>
</body>
</html>