Footer Widgets - Columns
The Ariel theme contains designated widget areas for the footer. You can choose to insert any of the custom or built-in widgets available in your WordPress install. To access and edit them, go to Appearance > Widgets.
In the footer, widgets can be inserted into up to 4 responsive columns.
In order to have a smaller amount of columns, fill in as many as you want, and leave the remaining areas empty. This will automatically render the content in a symmetrical way.
If you would like to show just one column in the center, add widgets to only one of the Footer widget areas.
The Footer Columns are listed as follows in the Widgets section: