<!DOCTYPE html> <html> <head> </head> <body> </body> </html>Line 2 is
<html>, which is called a tag.
Line 12 is </html>, which closes the tag on line
2. Every webpage has an <html> tag that contains
the entire page, a <head> tag that contains things
about the page, and a <body> tag that contains
things on the page like text and images.