Resize content (Interactive video) in Interactive Book

EDIT: I retract this one, since it can just be approximated with a change to the CSS selector .h5p-interactive-book-chapter>div { max-width: none; }

I would love for content in Interactive Books, such as Interactive Videos, to resize when going into fullscreen. Alternatively, there could also be a fullscreen mode for child content types. As this user has already pointed out it seems impractical and unintuitive that there is no fullscreen mode for Interactive video within other Content Types.