ยง3.11. "Backgrounds of Special Elements" explains how the background of
:root or <body> extends to cover the entire canvas, but does not specify
what happens when the corresponding element has `visibility: hidden` or
`display: none`.
Firefox 30, Chromium 35, IE 11, and Opera 12 all agree to paint the
background with `visibility: hidden`, but not with `display: none`. I
suggest specifying both cases explicitly.
Test cases:
data:text/html,<style>html{background:green}</style>
data:text/html,<style>body{background:green}</style>
data:text/html,<style>html{background:green;visibility:hidden}</style>
data:text/html,<style>body{background:green;visibility:hidden}</style>
data:text/html,<style>html{background:red;display:none}</style>
data:text/html,<style>body{background:red;display:none}</style>
--
Simon Sapin
Received on Wednesday, 9 July 2014 14:40:08 UTC
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