Div and id

Question

For what "div" is here? Is it nesessary for "id"?

Answer 1

The "div" tag is nothing more than a container unit that encapsulates other page elements and divides the HTML document into sections. The id attribute specifies a unique id for an HTML element (the value must be unique within the HTML document). The id attribute is most used to point to a style in a style sheet, and by JavaScript (via the HTML DOM) to manipulate the element with the specific id. and you don't need id in order to use div instead you can use class if you want to.