XHTML (1 ene 1998 año – 31 dic 2002 año)
Descripción:
This was a period of time where an alternate version of HTML, called HTML, was developed by W3C. XHTML had much stricter and less free coding standards and would flat out reject some websites.
Añadido al timeline:
fecha:
1 ene 1998 año
31 dic 2002 año
~ 5 years