Rycochetpostcss-epub 
PostCSS plugin to give correct ePub3 css output.
See the EPUB 3 CSS Profile for more information.
Installation
$ npm install postcss-epubOptions
fonts:true- This will ensure fonts have the correct font-weight and font-style defaults. This will also throw an error if any there is not a valid font source format (opentype or woff).strip:true- This will strip any non-epub-prefixes.strict:true- Implies all other options are set.
Usage
postcss([ require("postcss-epub") ])
// or
postcss([ require("postcss-epub")({strict:true}) ])See PostCSS docs for examples for your environment.
Example
@font-face {
font-family: 'Fake Font';
src: local('Fake Font'),
url('path/to/font.woff') format('woff'),
url('path/to/font.ttf') format('truetype'),
url('path/to/font.otf') format('opentype');
}
stuff {
dont: care;
hyphens: all;
line-break: normal;
text-align-last: center;
text-emphasis: red triangle;
text-emphasis-color: red;
text-emphasis-style: triangle;
word-break: break-all;
-webkit-prefix: something;
}@font-face {
font-family: 'Fake Font';
src: local('Fake Font'),url('path/to/font.woff') format('woff'),url('path/to/font.otf') format('opentype');
font-weight: normal;
font-style: normal;
}
stuff {
dont: care;
-epub-hyphens: all;
hyphens: all;
-epub-line-break: normal;
line-break: normal;
-epub-text-align-last: center;
text-align-last: center;
-epub-text-emphasis: red triangle;
text-emphasis: red triangle;
-epub-text-emphasis-color: red;
text-emphasis-color: red;
-epub-text-emphasis-style: triangle;
text-emphasis-style: triangle;
-epub-word-break: break-all;
word-break: break-all;
}