Content Block

All sections contain a content block. A Content Block is the container into which you can place Content Items in order to build content. All Sections contain a content block and most layout content items contain at least one content block.
You can change the position and size of the content block, as well as the alignment and distribution of the content within it.
Section.png
 
By default, the content block height will be set to auto, so it will take the height of any content added to it. In order to use the vertical distribution setting, a vertical height must be set.
Content block.png