If you would like to create custom sections, many of the content sections are set up in a similar manner:
§ Element wanting to display
Columns is like the “parent” container....
that holds child column(s), which can be a single column or combination of columns that equal the full 100% width of the layout...
which can contain any combination of elements (i.e. Blocks) of your choosing.
Through this format, you gain the ability for display content and images any way you want.