...
These are the ones that currently exist:
Alert
Basic block
Image
Video
Alert
Alert blocks provide an area to add text and a selector to choose the “background“ color. These use Bootstrap alerts styling.
Basic
Basic blocks provide fields for a simple title and text block to be added to pages.
Image
Image blocks provide the ability to upload an image, add an optional caption, and a provide link (that will wrap the image on display).
...