<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>
<div class="container h-80">
<div class="row align-items-center h-100">
<div class="col-3 mx-auto">
<div class="text-center">
<img id="profile-img" class="rounded-circle profile-img-card" src="https://i.imgur.com/6b6psnA.png" />
<p id="profile-name" class="profile-name-card"></p>
<form class="form-signin">
<input type="password" name="password" id="inputPassword" class="form-control form-group" placeholder="password" required autofocus>
<button class="btn btn-lg btn-primary btn-block btn-signin" type="submit">enter</button>
</form>
</div>
</div>
</div>
</div>