With the introduction of Resources to manage your files, we have also introduced three new elements for displaying those resources in Composer. While you can still use the content editor to insert photos and videos, as well as links to resources, the Resources elements offer additional features to optimize the display of files on your site.
The Resource element can be formatted as a List, Grid, or Slideshow to feature an entire gallery's worth of resources (including sub-galleries). The Image element automatically displays an image at the full width of the container, and you can choose to show the resource’s description or a custom caption. Finally, the Video element allows you to show or hide the video controls, as well as display closed captions, autoplay the video, and loop it from the beginning.