Use the http-equiv attribute to get the HTTP header for the information of the content attribute in HTML.
Example
You can try to run the following code to implement http-equiv attribute −
<html> <head> <title>HTML http-equiv attribute</title> <meta name = "keywords" content = "HTML, meta tag, metadata" /> <meta name = "description" content = "Description of the document" /> <meta http-equiv = "refresh" content = "10" /> </head> <body style = "background-color:gray"> Document content goes here </body> </html>