|  | <!doctype HTML> | 
|  | <title>Background-attachment: scroll should be positioned relative to the root element and should extend to cover the entire canvas in the presence of fixed backgrounds</title> | 
|  | <link rel="author" title="Philip Rogers" href="mailto:pdr@chromium.org"> | 
|  | <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#root-background"> | 
|  | <link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#the-background-attachment"> | 
|  | <link rel="match" href="background-attachment-margin-root-001-ref.html"> | 
|  | <style> | 
|  | html { | 
|  | background: linear-gradient(rgba(0,255,0,0.5), rgba(0,0,255,0.5)), linear-gradient(rgba(0,0,0,1), rgba(0,0,0,1)); | 
|  | background-attachment: scroll, fixed; | 
|  | background-size: 100px 100px, 100px 100px; | 
|  | height: 300px; | 
|  | margin: 50px; | 
|  | } | 
|  | </style> |