The parent tag <html>.
The first tag that you add on your file will be html.
This is the tag which defines that the document is html.
Insert the tag in to your file as.
Any new tag added will lie between this tags.
Any html file should have head and body tag inside the html tag.
<html> is called starting html tag.
</html> is called ending html tag.
Most tags in html will have both starting and ending tags.