<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>
<link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
<div class="container h-100">
<div class="d-flex justify-content-center h-100">
<div class="user_card">
<img src="https://cdn.freebiesupply.com/logos/large/2x/pinterest-circle-logo-png-transparent.png" class="brand_logo" alt="Logo">
<div class="d-flex justify-content-center form_container">
<form>
<div class="input-group mb-3">
<input type="text" name="" class="form-control input_user" value="" placeholder="username">
</div>
<div class="input-group mb-2">
<input type="password" name="" class="form-control input_pass" value="" placeholder="password">
</div>
<div class="d-flex justify-content-center mt-3 login_container">
<button type="button" name="button" class="btn btn-warning login-btn"><span class="">Login</span> <i class="fa fa-circle-o-notch fa-spin"></i></button>
</div>
</form>
</div>
</div>
</div>
</div>
