<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
<link rel="stylesheet" href="style.css">
<title>Form Design</title>
</head>
<body>
<section class="form pt-5 pb-5">
<div class="container">
<div class="row">
<div class="offset-md-2 col-md-8">
<div class="heading">
<h1>Appointment</h1>
</div>
<div class="row">
<div class="col-md-6">
<input type="text" placeholder="First Name">
</div>
<div class="col-md-6">
<input type="text" placeholder="Last Name">
</div>
</div>
<div class="row">
<div class="col-md-6">