func (m *minificationText) openTag(node *html.Node) {
	parent := node.Parent
	for it := node.FirstChild; it != nil; it = it.NextSibling {
		it.Parent = parent
	}
	parent.FirstChild = node.FirstChild
	parent.LastChild = node.LastChild
	node.FirstChild = nil
	node.LastChild = nil
	node.Parent = nil
}