Bootstrap modal form
By pressing button shows up modal form. You have to remember setting Internet privilege for external scripts.
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<style>
</style>
</head>
<body>
<div class="container">
<h3>Modal form Example</h3>
<!-- Trigger the modal with a button -->
<button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">Sign on</button>
<!-- Modal -->
<div class="modal fade" id="myModal" role="dialog">
<div class="modal-dialog">
<!-- Modal content-->
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">×</button>
<h4 class="modal-title">Enter your data below</h4>
</div>
<div class="modal-body">
<form>
First Name:<br><input type="text"><br>
Last Name:<br><input type="text"><br>
E-mail:<br><input type="email"><br>
Password:<br><input type="password"><br><br>
<input class="btn btn-info btn-lg" type="submit" value="Register">
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</div>
</div>
</div>
</div>
</body>
</html>