<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<center>
<div class="container">
<form action="/action_page.php" class="form-vertically">
<div class="form-group">
<label for="name">
Name:
</label>
<input type="text" required="" placeholder="Enter First Name">
<label for="name">
Name:
</label>
<input type="text" required="" placeholder="Enter username"><br>
<label for="name">Email-
</label>
<input type="test" required="">
<label for="name">
Birthdate.
</label>
<input type="date"><br>
<button type="button">Submit </button>
</div>
