src/View/Requirements_Backend.php
public function css($file, $media = null)
    {
        $file = ModuleResourceLoader::singleton()->resolvePath($file);

        $this->css[$file] = [
            "media" => $media
        ];
    }
public function css($file, $media = null)
    {
        $file = ModuleResourceLoader::singleton()->resolvePath($file);

        $this->css[$file] = [
            "media" => $media
        ];
    }
public function css ( $ file , $ media = null ) { $ file = ModuleResourceLoader :: singleton ( ) -> resolvePath ( $ file ) ; $ this -> css [ $ file ] = [ "media" => $ media ] ; }
Register the given stylesheet into the list of requirements.

@param string $file The CSS file to load, relative to site root
@param string $media Comma-separated list of media types to use in the link tag
(e.g. 'screen,projector')
Register the given stylesheet into the list of requirements .