container.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
        *{
            margin: 0%;
        }
    </style>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
    <title>bs1</title>
</head>
<body>
    <div class="container bg-primary text-center ">
        <h1>My First Bootstrap Page.</h1>
        <p>Using "container" Class.</p>
        <p>You can also use the .container-sm|md|lg|xl classes to determine when the container should be responsive.</p>
      </div>  
      <div class="container-fluid bg-dark text-center text-white">
        <h1>My First Bootstrap Page</h1>
        <p>Using "container-fluid" Class</p>
      </div> 
</body>
</html> 