My name is
Miranda Smith
There are three formal DTDs for XHTML 1.0, corresponding to the three different versions of HTML 4.01:
- * XHTML 1.0 Strict is the XML equivalent to strict HTML 4.01,
and includes elements and attributes that have not been marked deprecated in the HTML 4.01 specification. - * XHTML 1.0 Transitional is the XML equivalent of HTML 4.01 Transitional,
and includes the presentational elements (such as center, font and strike) excluded from the strict version. - * XHTML 1.0 Frameset is the XML equivalent of HTML 4.01 Frameset,
and allows for the definition of frameset documents—a common Web feature in the late 1990s.
Validity assures consistency in document code, which in turn eases processing,
but does not necessarily ensure consistent rendering by browsers.
A document can be checked for validity with the W3C Markup Validation Service.
In practice, many web development programs provide code validation based on the W3C standards.
