Section and Columns
The section element is a full width element that an be used as a container for column elements.
A Column element is added by default, and you can see it when you hover the section element:
At this point you can configure the number of columns for the “Column” element. The default value is 12, which means full width.
As you can see in the image below, Sections are very configurable:
As sections, Columns are customizable too: