Use the <mark> tag to highlight HTML content. The HTML <mark> tag specifies a text highlighted for reference purposes that is for its relevance in another context.
Example
You can try to run the following code to highlight HTML content for reference purposes −
<!DOCTYPE html> <html> <head> <title>HTML Mark Tag</title> </head> <body> <h2>Cricketers in India</h2> <p>Sachin Tendulkar is <mark>god</mark> of cricket.</p> </body> </html>