The HTML head tag elements contain
<base> elements. It provides extra information( metadata) to the HTML document that is useful for displaying web pages in the browser.
It provides different instructions to the browser about the character sets, style sheets, and scripts so that browser understands the metadata and then displays web pages in the proper way.
Keep in mind that HTML
<head> elements provide metadata to the HTML document that is the most useful during displaying the web page into the browser.