Your customers can now create more sophisticated page layouts by placing Columns widgets inside other Columns widgets. This makes it possible to build custom sections, galleries, comparison layouts, and other advanced designs without writing code.
Nested columns can be combined with text, images, buttons, and other widgets to create highly flexible layouts. Users can easily switch between parent and nested elements using the element selector in the widget control pane and customize each element's appearance independently.
For step-by-step instructions, see the Help Center tutorial: Creating nested columns in a Custom block.