5 ruby { border: solid 5px cyan; }
6 .vert { -webkit-writing-mode: vertical-rl; }
10 Ruby text should be at the center of ruby base.
12 <ruby>aaaaa<rt>b</rt></ruby><br>
16 <ruby>a<rt>bbbb</rt></ruby><br>
20 <ruby>aaaaa<rt>b</rt></ruby><br>
24 <ruby>a<rt>bbbb</rt></ruby><br>