OptionalfontSets the value to use for font-stretch for the corresponding
rule. See: https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-stretch
If undefined, font-stretch is not added to the @font-face.
OptionalfontSets the value to use for font-style for the corresponding
rule. See: https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-style
If undefined, font-style is not added to the @font-face.
OptionalfontSets the value to use for font-weight for the corresponding
rule. See: https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/font-weight
If undefined, font-weight is not added to the @font-face.
The media type of the font.
OptionalsrcThe font source data as a base64 string. To ensure compatibility, it is recommended to use a .woff, .otf or .ttf font. When using .otf or .ttf font, the font will only work on IE if the font is set to "installable"
OptionalsrcThe URL to the font resource. To ensure compatibility, it is recommended to use a .woff, .otf or .ttf font.
To be able to load fonts by URL, you must also allow remote resources
by configuring EpubReaderPublicationOptions.remoteResourcesNonScriptedDocumentsOptions.
If both src and srcUrl are specified, srcUrl will be used instead.
The font family name for this font face. Cannot be any of the reserved words: