public function offsetUnset($name)
{
foreach ($this->_fd as $node) {
if ($node instanceof \DOMElement && $node->hasAttribute('style')) {
$properties = new Css\Properties($node->getAttribute('style'));
unset($properties[$name]);
if (count($properties) > 0) {
$node->setAttribute('style', (string) $properties);
} else {
$node->removeAttribute('style');
}
}
}
}