index.html

<!DOCTYPE html>
 <html>
<head>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.3/css/bootstrap.min.css" integrity="sha384-TX8t27EcRE3e/ihU7zmQxVncDAy5uIKz4rEkgIXeMed4M0jlfIDPvg6uqKI2xXr2" crossorigin="anonymous">
    <link rel="stylesheet" href="style.css">
    <title> my css</title>

</head>
<body>
    <h1>Tanu Rana</h1>
    <p>Lorem ipsum dolor sit amet consectetur adipisicing elit. Dolore, natus cum hic atque voluptate saepe repudiandae quia laboriosam. Amet suscipit iste totam aliquam! Corporis mollitia eum repellendus omnis libero doloribus.</p>
    <button class="btn-primary">primary</button>
    <button class="btn-primary">primary</button>
</body>


 </html>