Sample popup map with Bootstrap 3
<!DOCTYPE html>
<html lang="en-GB">
<head>
<title>Bootstrap 3 popup map example</title>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-2">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
</head>
<body>
<header>
</header>
<div class="container">
<div class="col-2">
<a href="#mapModal" data-toggle="modal">Click me</a>
<div class="modal fade in" id="mapModal">
<div class="modal-content" style="margin-left: auto; margin-right: auto; width: 60%; margin-top: 100px">
<div class="modal-header" style="height: 65px;">
<h1 class="modal-title pull-left">Header</h1>
<button class="close" style="margin-top: 10px" type="button" data-dismiss="modal">
<span>×</span>
</button>
</div>
<div class="modal-content">
<div>
<iframe src="https://www.google.com/maps/embed?pb=!1m14!1m12!1m3!1d3516.639799254184!2d-3.192134437978268!3d55.938584943800784!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!5e0!3m2!1sen!2suk!4v1482167770319" width="100%" height="450" frameborder="0" style="border:0" allowfullscreen></iframe>
</div>
</div>
</div>
</div>
</div>
</div>
<footer>
</footer>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</body>
</html>