function hook_css_alter

Alter CSS files before they are output on the page.

Parameters

$css: An array of all CSS items (files and inline CSS) being requested on the page.

\Drupal\Core\Asset\AttachedAssetsInterface $assets: The assets attached to the current response.

\Drupal\Core\Language\LanguageInterface $language: The language of the request that the assets will be rendered for.

See also

Drupal\Core\Asset\LibraryResolverInterface::getCssAssets()

Related topics

File

core/lib/Drupal/Core/Render/theme.api.php, line 1072

Code

function hook_css_alter(&$css, \Drupal\Core\Asset\AttachedAssetsInterface $assets, \Drupal\Core\Language\LanguageInterface $language) {
    // Remove defaults.css file.
    $file_path = \Drupal::service('extension.list.module')->getPath('system') . '/defaults.css';
    unset($css[$file_path]);
}