The <header> element defines a header for the document or section. It usually contains a logo, search bar, navigation.
Take a look at the example below:
The code:
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<header>
<h1>My First Website</h1>
</header>
<body>
<hr>
<p> Tom and Jerry, American animated cartoon series about a hapless cat’s never-ending pursuit of a clever mouse </p>
</body></html>