index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h1>Heading</h1>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsam illum iusto recusandae aspernatur dolores nostrum dignissimos earum! Facilis, rerum autem deserunt dolor voluptatem voluptas vero. Enim fugiat quia eaque asperiores.</p>
    <button>Click me!</button>
    <div>This is a div</div>
    <div id="one">DIV2</div>
</body>
</html>