what is div in html used for code example

Example 1: make a div in html

<div> </div>

Example 2: div html

<div style="background-color:lightblue">
  <h3>This is a heading</h3>
  <p>This is a paragraph.</p>
</div>

Example 3: html div

//div tag

<div>
	//content
  	
</div>

//a div is an invisible box