Code and Output for mark:

Code:

    <!DOCTYPE html>
    <html>
    <head>
      <title>HTML Example</title>
    </head>
    <body>
      <h1>The mark element</h1>
      <p>Do not forget to buy <mark> milk</mark> today.</p>
    </body>
    </html>
  

Output:

The mark element

Do not forget to buy milk today.