|  | <!doctype html> | 
|  | <html lang=en> | 
|  | <meta charset=utf-8> | 
|  | <title>CSS-contain test: size containment on ruby-base</title> | 
|  | <link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net"> | 
|  | <meta name=flags content=""> | 
|  | <meta name=assert content="size containment does not to apply ruby-base, which is an internal ruby element"> | 
|  | <link rel="match" href="reference/pass_if_pass_below_clipped.html"> | 
|  | <link rel=help href="https://drafts.csswg.org/css-contain-1/#containment-size"> | 
|  | <link rel=help href="https://drafts.csswg.org/css-display-3/#internal-ruby-element"> | 
|  |  | 
|  | <style> | 
|  | div { | 
|  | overflow: hidden; | 
|  | position: absolute; | 
|  | } | 
|  | rb { | 
|  | contain: size; | 
|  | display: ruby-base; | 
|  | } | 
|  | </style> | 
|  |  | 
|  | <p>Test passes if there is the word "PASS" below.</p> | 
|  | <div><ruby><rb>PASS</rb></ruby></div> |