css_weights.libraries.yml in Drupal 8

core/tests/Drupal/Tests/Core/Asset/library_test_files/css_weights.libraries.yml

File

core/tests/Drupal/Tests/Core/Asset/library_test_files/css_weights.libraries.yml

example:
  css:
    theme:
      css/theme__no_weight.css: {}
      css/theme__weight.css:
        weight: 29
    base:
      css/base__no_weight.css: {}
      css/base__weight.css:
        weight: 97
    layout:
      css/layout__no_weight.css: {}
      css/layout__weight.css:
        weight: 92
    component:
      css/component__no_weight.css: {}
      css/component__weight.css:
        weight: 45
    state:
      css/state__no_weight.css: {}
      css/state__weight.css:
        weight: 8