<https://codevn.net/threads/de-xuat-thiet-ke-lai-trang-chu-cho-dep.32964/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://codevn.net/threads/de-xuat-thiet-ke-lai-trang-chu-cho-dep.32964/#post-44552>