Thread: Image styling css... what do all these properties do?
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Old 06-17-2025, 12:29 PM   #73
JSWolf
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Quote:
Originally Posted by RbnJrg View Post
I didn't understand that last statement of yours. As you know, Readium is an open source initiative whose primary goal is to facilitate the implementation of the EPUB 3 specification. Well, originally, the Readium Project (launched by the IDPF, now part of the W3C) was conceived with the idea of ​​building its EPUB 3 reference implementation on top of WebKit. Although the direct reliance on "WebKit" as a single entity has diversified over time, the idea of ​​using a web rendering engine to display EPUB content (which is essentially HTML and CSS) remains fundamental to Readium's functionality. So:

Readium Web: Uses the capabilities of the web browser it's running in. If your browser uses WebKit (like Safari), then Readium Web will take advantage of that.

Readium Mobile and Desktop: These native app toolkits can still use webview components, which in turn can be based on WebKit (especially on iOS/macOS) or on its derivatives/alternatives (such as WebView on Android using Blink/Chromium, or Electron on desktop using Chromium/Blink).

AFAIK, all ereaders based on Readium support webkit properties. More than that, if you want to view text in color within Calibre Viewer then you need employ the property "-webkit-text-fill-color"; without that property, no colors in Calibre Viewer. So see if the webkit properties are not important.
It doesn't actually matter what Readium does with Webkit. Webkit is not part of the ePub3 standard. So using anything Webkit is non-ePub3 compliant.

Can you make that Alice sample without using any Webkit and just ePub3 code?
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