Choose what kind of DOCTYPE?
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Strict//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd“>
A.1.2. XHTML-1.0-Transitional
The file DTD/xhtml1-transitional.dt d is a normative part of this specification. The annotated contents of this file are available in this separate section for completeness.
<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN”...