Attribute of the LINK Element 
The link element allows to authors link their document other resources. The destination of link by the href attribute, which must present and must contain valid non empty URL potentially surrounded by spaces. A link of element must have rel attribute.
1] Href
Value :- URL
Syntax :-
<a href="url">link text</a>
Description :-
Specified the target URL you navigate to after clicking a link.The href attribute link short for “Hypertext REFerence” indicates the relationship between pages to search engines. href is the attribute of anchor tag and contains a two components.The URL (the actual link) and. The clickable text or object that users will see on the page known as the “anchor text”
