Code
<script src="./jquery-3.2.1.js"> </script>
<script>
$(document).ready(function()
{
$("p").css("background-color","Pink");
$("h1").css("background-color","green");
$("#demo").css("background-color","Yellow");
});
<;/script>
<h1>Good Morning </h1>
<p>This is JQuery Demo Page</p>
<div> Have good day
See U Soon </div>
