HTML Head tag and it’s Elements
Head is required tag of HTML page. It is the first tag of an HTML element. As an html page interpreted by the browser we can’t put the Head tag below the body tag. As we know HTML language is in format of string so to present correct visual effects to users, pages need some external resources like css links and script files. Also there is some additional information needed about the page which is also used for SEO engines to categories pages for right keywords. So all this information related to css, script, mega tags are added under Head tag. Rest you can watch in this video -