You can select a HTML tag with its class name which is used
by tag. When you know class name then you can add custom HTML from a function
of java script using jquery class selector.
<html>
<head>
<title>Girfa
Student Help</title>
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.min.js"></script>
<style>
.para
{
text-align:center;