vertical_text-combine-upright-ref.html

<!DOCTYPE html>
<title>Reference for WebVTT rendering, bidi ruby</title>
 <meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
html { overflow:hidden }
body { margin:0 }
.video {
    display: inline-block;
    width: 320px;
    height: 180px;
    position: relative;
    font-size: 9px;
}
.cue {
    position: absolute;
    bottom: 0;
    text-align: center;
    unicode-bidi: -webkit-plaintext;
    unicode-bidi: plaintext;
    direction: ltr;
    writing-mode: vertical-lr;
    -webkit-writing-mode: vertical-lr;
}
.cue > span {
    font-family: Ahem, sans-serif;
    background: #0f0 url('../../media/background.gif') repeat-x top left;
    color: green;
}
.combine {
    -webkit-text-combine: horizontal;
    text-combine-upright: all;
}
</style>
<div class="video"><span class="cue"><span>平成<span class="combine">20</span>年4月<span class="combine">16</span>日に</span></span></div>

chromium/third_party/blink/web_tests/external/wpt/webvtt/rendering/cues-with-video/processing-model/selectors/cue/vertical_text-combine-upright-ref.html