As a newcomer to the world of web development, I encountered an issue while trying to align a container on my webpage. Despite my efforts to center the container using (line 30), the page seems to update but there is no visible change. Can anyone help me figure out where I'm going wrong? I've also included my code below for reference.
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Required meta tags always come first -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="node_modules/bootstrap/dist/css/bootstrap.min.css">
<title>Ristorante Con Fusion</title>
</head>
<body>
<header>
<div>
<div>
<div>
<h1>Ristorante con Fusion</h1>
<p>We take inspiration from the World's best cuisines, and create a unique fusion experience. Our lipsmacking creations will tickle your culinary senses!</p>
</div>
<div>
</div>
</div>
</div>
</header>
<div class="container">
<div>
<div>
<h3>Our Lipsmacking Culinary Creations</h3>
</div>
<div>
<h2>Uthappizza</h2>
<p>A unique combination of Indian Uthappam (pancake) and Italian pizza, topped with Cerignola olives, ripe vine cherry tomatoes, Vidalia onion, Guntur chillies and Buffalo Paneer.</p>
</div>
</div>
<div>
<div>
<h3>This Month's Promotions</h3>
</div>
<div>
<h2>Weekend Grand Buffet</h2>
<p>Featuring mouthwatering combinations with a choice of five different salads, six enticing appetizers, six main entrees and five choicest desserts. Free flowing bubbly and soft drinks. All for just $19.99 per person </p>
</div>
</div>
<div>
<div>
<h3>Meet our Culinary Specialists</h3>
</div>
<div>
<h2>Alberto Somayya</h2>
<h4>Executive Chef</h4>
<p>Award winning three-star Michelin chef with wide International experience having worked closely with whos-who in the culinary world, he specializes in creating mouthwatering Indo-Italian fusion experiences. </p>
</div>
</div>
</div>
<footer>
<div>
<div>
<div>
<h5>Links</h5>
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Menu</a></li>
<li><a href="#">Contact</a></li>
</ul>
</div>
<div>
<h5>Our Address</h5>
<address>
121, Clear Water Bay Road<br>
Clear Water Bay, Kowloon<br>
HONG KONG<br>
Tel.: +852 1234 5678<br>
Fax: +852 8765 4321<br>
Email: <a href="mailto:<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f3909c9d9586809a9c9db3959c9c97dd9d9687">[email protected]</a>"><a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="beddd1d0d8cbcdd7d1d0fed8d1d1da90d0dbca">[email protected]</a></a>
</address>
</div>
<div>
<div>
<a href="http://google.com/+">Google+</a>
<a href="http://www.facebook.com/profile.php?id=">Facebook</a>
<a href="http://www.linkedin.com/in/">LinkedIn</a>
<a href="http://twitter.com/">Twitter</a>
<a href="http://youtube.com/">YouTube</a>
<a href="mailto:">Mail</a>
</div>
</div>
</div>
<div>
<div>
<p>© Copyright 2018 Ristorante Con Fusion</p>
</div>
</div>
</div>
</footer>
<!-- jQuery first, then Popper.js, then Bootstrap JS. -->
<script src="node_modules/jquery/dist/jquery.slim.min.js"></script>
<script src="node_modules/popper.js/dist/umd/popper.min.js"></script>
<script src="node_modules/bootstrap/dist/js/bootstrap.min.js"></script>
</body>
</html>