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<!DOCTYPE HTML>
<html>
<head>
    <meta charset="utf-8">
    <style>
        @font-face {
            font-family: halt-font;
            src: url('/fonts/noto/cjk/NotoSansCJKjp-Regular-subset-halt-min.otf');
        }
        body { writing-mode: vertical-rl; font-family: Arial; }
        .underline { text-decoration: underline; font-family: halt-font; font-language-override: "JAN"; }
        .overline { text-decoration: overline; font-family: halt-font; font-language-override: "JAN"; }
    </style>
</head>
<body lang="en">
    <div>In vertical writing mode with lang=ja, default overline will be same as underline (lang=en). However, when we set text-underline-position to "under left" it should be shifted.</div>
    <div class="underline">国国国国</div>
    <div class="underline">国国国国</div>
</body>
</html>