Coding: XHTML: HTML Tags
You start with your declaration. Then, you'll place the rest of the information on the web page between two html tags.
The <html> tag will be at the beginning and the </html> will be at the very end of your document. Most HTML tags have a start tag and an end tag. In the case of the html tag, the start tag is <html> and the end tag is </html>. Notice that the tags are in all lowercase letters. The end tag contains a slash (/).
You can simply start with <html> or add the following to the opening HTML tag. Also be sure that you have an ending tag. Either of the following will work fine.
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
</html>
<html xmlns="http://www.w3.org/1999/xhtml" >
</html>
Your Document
Your document should now look something like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
</html>
Learn More
HTML tag from w3schools