|  | <!doctype html> | 
|  | <html lang=en> | 
|  | <meta charset=utf-8> | 
|  | <title>CSS-contain test: layout containment on html prevents overflow propagation</title> | 
|  | <link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net"> | 
|  | <meta name=flags content=""> | 
|  | <meta name=assert content="layout containment on html prevents overflow propagation"> | 
|  | <link rel="match" href="reference/contain-body-overflow-001-ref.html"> | 
|  | <link rel=help href="https://drafts.csswg.org/css-contain-1/#contain-property"> | 
|  |  | 
|  | <style> | 
|  | html, body, p, div { | 
|  | margin: 0; | 
|  | width: 200px; | 
|  | height: 200px; | 
|  | } | 
|  | div { background: red; } | 
|  | body { | 
|  | overflow: hidden; | 
|  | } | 
|  | html { | 
|  | contain: layout; | 
|  | } | 
|  | </style> | 
|  |  | 
|  | <p>Test passes if there is no red. | 
|  |  | 
|  | <div></div> |