8 Replies
Math Notermans

HTML5 is nothing more then some extra additions to HTML. If elements like Canvas, GeoLocation are possible its HTML5. Most modern HTML is HTML5.

If you open the file in a texteditor HTML5 websites will not have a reference to the DTD in the doctype. Thus, the doctype tag at the top of the file will look like this:

<!DOCTYPE html>

Instead of one of these:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN""http://www.w3.org/TR/html4