Basic HTML and HTML5: Declare the Doctype of an HTML Document

HTML-CSS
1

My code does not work
this link for projcet:
https://learn.freecodecamp.org/responsive-web-design/basic-html-and-html5/declare-the-doctype-of-an-html-document

<!DOCTYPE html>
<h1>A cat</h1>
<html><h1</html>
1 Like
3

define your html tag before the h1 tag
also close the h1 tag which has been defined between html tag

2 Likes
4 
<!DOCTYPE html>
<h1>Jingle Balls</h1>
</html>

It doesn't work when done correctly...
5
Jingle Balls

Jingle Balls

This is the correct way

6
Cat Lover

A cat

Correct Way