Similarly to the Header layout, the Footer layout is composed by two main areas:
- the Footer layout,
- the Bottom bar layout.
The Footer layout is intended to be used as a classic column based footer sidebar, while the bottom bar layout instead is intended to be used as a section useful to display secondary information, such as copyrights.
Both the areas are structured in columns, and each column can be populated with a widget area. For more about Widget areas, go check the appropriate section in the documentation.