Numérotation inside

  1. XHTML 1.0
    1. DTD transitional
    2. DTD strict
    3. DTD frameset
  2. XHTML 1.1
    1. DTD unique
  3. CSS
    1. CSS 1
    2. CSS 2
    3. CSS 2.1

Numérotation outside

  1. XHTML 1.0
    1. DTD transitional
    2. DTD strict
    3. DTD frameset
  2. XHTML 1.1
    1. DTD unique
  3. CSS
    1. CSS 1
    2. CSS 2
    3. CSS 2.1