css_bad_nesting.libraries.yml in Drupal 9

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

File

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

bad_nesting:
  css:
    # No nesting here will break.
    css/styles.css: { minified: true }