Note-
#react ko single page application bolte h kyuki pure project mai ek hi html file hoti h or sara kaam ussi ke ander hota h.
#entry point -index.js
#React DOM implementation h react ka web app pr.DOM ek tree structure h.react khud ka virtual DOM bnata h.

function Chai()
{
    return(
        <>
        {/* fragment */}
        <h2>I am Nistha</h2>
        <h3>btech</h3>
        </>
       
    )
}
export default Chai;