amino-1.0.x-dev/modules/amino_page_builder/amino_page_builder.libraries.yml

layout:
  css:
    layout:
      css/layout.css: {}

one-column:
  css:
    layout:
      css/one-column.css: {}
  dependencies:
    - amino_page_builder/layout

two-column:
  css:
    layout:
      css/two-column.css: {}
  dependencies:
    - amino_page_builder/layout

three-column:
  css:
    layout:
      css/three-column.css: {}
  dependencies:
    - amino_page_builder/layout