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Old 06-28-2015, 02:55 PM   #11
pdurrant
The Grand Mouse 高貴的老鼠
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Quote:
Originally Posted by Jellby View Post
If you scroll down a bit the CSS 2 spec, it is more specific about "px":



But in the CSS 2.1 spec, "px" is already defined as an absolute unit:



So, yes, strictly speaking ePub 2.0.1 uses CSS 2, where "px" is not hardwired, but it's still not the device pixel. In CSS 2.1 (and I assume CSS 3 too), this was fixed to 1/96 in, which roughly agrees with the recomendation of CSS 2.

Many thanks! I should indeed have read on further.
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