public function __construct($files)
{
$this->location = 'head.append';
foreach ((array) $files as $file) {
$file = $this->asset($file);
$this->files[] = $file;
}
// initialization
$this->attr('type', 'text/css');
$this->attr('rel', 'stylesheet');
$this->attr('media', 'all');
}