W3C CSS2 Cascading Style Sheets, level 2 - instructional media + ...

The background of the box generated by the root element covers the entire
canvas [p. 26] .
For HTML documents, however, we recommend that authors specify the background
for the BODY element rather than the HTML element. User agents should
observe the following precedence rules to fill in the background: if the value of
the ’background’ property for the HTML element is different from ’transparent’
then use it, else use the value of the ’background’ property for the BODY
element. If the resulting value is ’transparent’, the rendering is undefined.
According to these rules, the canvas underlying the following HTML document
will have a "marble" background:
Setting the canvas background
BODY { background: url("http://style.com/marble.png") }
My background is marble.
14.2.1 Background properties: ’background-color’,
’background-image’, ’background-repeat’, ’background-attachment’,
’background-position’, and ’background’
’background-color’
Value: | transparent | inherit
Initial: transparent
Applies to: all elements
Inherited: no
Percentages: N/A
Media: visual
This property sets the background color of an element, either a value
or the keyword ’transparent’, to make the underlying colors shine through.
Example(s):
H1 { background-color: #F00 }
’background-image’
Value: | none | inherit
Initial: none
Applies to: all elements
Inherited: no
Percentages: N/A
Media: visual
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