Modern versions (EPUB 3) can include interactive elements like audio, video, and hyperlinks.
The text "flows" to fit your screen. If you increase the font size, the number of words on the screen decreases, but the layout remains readable. Скачать файл (ePUB)
What is an .EPUB file and how do I open and view one? - Adobe Modern versions (EPUB 3) can include interactive elements
Files contain built-in metadata (title, author, and chapters), allowing reader apps to organize your library automatically. How to Open and Read EPUB Files Скачать файл (ePUB)