Well, I've recently began motivated to learn HTML. After learning the basics of HTML from w3schools.com, I've decided to try practicing on blogger layouts. I looked over some of the layouts on createblog and ran into a problem.
I've noticed some layouts begin with -
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
and other's not...
Also, it was followed by the lines below
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
Is this some sort of external style sheet?
Please clear things up for me! Thanks in advance!