ass="container">

        <script>
            var app = angular.module('demo', ['ui.mask']);
        </script>
        <section id="mask">
            <div class="page-header">
                <h1>Mask</h1>
            </div>
            <div class="row">
                <div class="col-md-6">
                    <h3>What?</h3>

                    <p>Apply a mask on an input field so the user can only type pre-determined pattern.</p>
                    <form name="demo" class="form-horizontal">
         