Use the rel attribute to see the relationship between the current document and the linked document. It works for <a>, <area>, <link> HTML elements.
Example
You can try to run the following code to implement rel attribute. The example sets the CSS files −
<!DOCTYPE html> <html> <head> <link rel = "stylesheet" href = "style.css"> </head> <body> <h1>Heading</h1> <p>This is demo content.</p> </body> </html>