The Element Settings panel in the right-hand toolbar lets you customize the properties of elements in your publication. Options vary depending on the selected element type.
Note: Not all elements can be customized.
Video
Autoplay: Enable or disable automatic video playback when the page opens.
Show controls: Show or hide the playback controls bar.
Custom thumbnail: Set a custom thumbnail image for the video.
Loop: Make the video repeat continuously.
Mute: Mute the video audio.
Sound
Check the Autoplay checkbox to have the audio start automatically when a reader opens the page.
Slideshow
Crop — Crops images to fill the rectangle (default).
Fit — Centers images without cropping.
Transition:
Fade — The current image gradually disappears and the next appears.
Slide — The next image slides in from the right.
You can also add a title and description to each slideshow image.



