So i want this form which is in a card to be in the middle of the whole web page and responsive.I tried changing the height of everything to h-100 and align-items-center and nothing seems to work.
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<style>
html,body{
height: 100%;
}
</style>
<title></title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
</head>
<body>
<div class="container h-100">
<div class="d-flex justify-content-center h-100 ">
<div class="col-md-6 h-100 ">
<div class="card">
<div class="card-body">
<div class="card-title"><h3>Log In</h3></div>
<form method="post">
<div class="form-group">
<label for="username">Username</label>
<input class="form-control" type="text" name="username" value="Username" placeholder="Donald Trump...">
</div>
<div class="form-group">
<label for="username">Password</label>
<input class="form-control" type="password" name="password" value="Password" placeholder="**********">
</div>
<input class="btn btn-primary" type="submit" name="" value="LogIn">
</form>
</div>
</div>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
</body>
</html>
I was expecting this: enter image description here
but i get this: enter image description here