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lines changed Original file line number Diff line number Diff line change @@ -125,13 +125,14 @@ <h2>14.2 <a name="background">The background</a></h2>
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- < p > However, if the element whose background would be used for the
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- background of the canvas has 'display: none', or is a descendant of an
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- element with 'display: none', then the canvas background is
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- undefined.
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+ < p > However, if no boxes are generated for the element whose background
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+ would be used for the background of the canvas, then the canvas
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+ background is transparent. (in CSS 2.1, that is the case when the
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+ element or an ancestor has 'display: none'.)
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< p > Note that, if the element has 'visibility: hidden' but not
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- 'display: none', its background < em > is</ em > used for the canvas.
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+ 'display: none', boxes < em > are</ em > generated for it and its
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+ background < em > is</ em > used for the canvas.
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