Check out example codes for "what is div in html". It will help you in understanding the concepts better.

Code Example 1

The <div> tag is nothing more than a container unit that encapsulates other page elements and divides the HTML document into sections.
 The div can be used for reading purposes or to nest all the information inside the div then to style the div through css as a background card.

Code Example 2

<div></div>

Code Example 3

<div class="" id=""></div>

Code Example 4

div {  display: block;}

Code Example 5

<div>
  <!-- This is opening of a division tag-->
</div>

Code Example 6

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

Learn ReactJs, React Native from akashmittal.com