Apr 022017
 

This article is about the default admin_page, admin_block and admin_block_content templates which serves as the base of the content display on some system configuration pages such as the one on this image:

Screenshot of the configuration page on a Drupal 8 website

Screenshot of the configuration page on a Drupal 8 website

The code

Explanation

If you use admin_page, you will be able to define the column in which the blocks dwell: left or right.

If you use directly admin_block, there is only a single block and it will span over the full width of the region.

So all in all, here is a pseudo hierarchy to better understand how it works: