Quote:
Originally Posted by RbnJrg
ePub2? No, since background-size is not a property supported by css2.
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It depends on what is meant by "following the specs". Using non-supported CSS properties in an ePub does not make it invalid. It may not display as intended, but it does not break the spec. (And, unlike the case when only "supported" properties are used, the renderer is not to blame.)