Quote:
Originally Posted by hayaku
IE, unit : “rem” is an incorrect unit : padding: 0.25rem; when I have a CSS entry like "padding: 0.25rem;".
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As KevinH has already pointed out, you'll only get this message when CSS2.1 (or lower) is selected as the CSS spec.
You can test this yourself with the online validator:
https://jigsaw.w3.org/css-validator/
If you're working on epub3 books, you'll need to change the following plugin preferences:
Code:
"css_epub2_validation_spec": "css21",
"css_epub3_validation_spec": "css3",
For more information, see the very first topic.