| <!DOCTYPE html> | |
| <meta charset="UTF-8"> | |
| <title>CSS Reference File</title> | |
| <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> | |
| <style> | |
| ruby | |
| { | |
| background-color: lightblue; | |
| font-size: 40px; | |
| } | |
| </style> | |
| <ruby><rbc>B<ruby>​<rt>A</rt></ruby></rbc></ruby> | |
| <!-- | |
| ​ or ​ is the entity reference for zero-wide space. | |
| MathML uses the entity name ​ for this character. | |
| --> |