HTML Layout

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        .heading{
            text-align: center;
            color:rgb(32, 32, 129);
            background-color: rgb(255, 219, 164);
            padding:30px;
        }
        .nav-list{
            display: flex;
            list-style-type: none;
            background-color: rgb(18, 18, 106);
            padding:10px;
        }
        .page-name{
            margin-right: 32px;
            color:rgb(255, 255, 255);
            text-decoration: none;
        }
        .container{
            display: flex;
        }
        .left{
            width: 70%;
            border: 1px solid black;
            height: 200px;
            padding: 10px;
        }
        .right{
            width: 30%;
            border: 1px solid black;
            height: 200px;
            padding: 10px;
        }
        .footer-part{
            text-align: center;
            background-color: rgb(77, 22, 22);
            padding: 20px;
            color: rgb(255, 255, 255);
        }

</style>
</head>
<body>
    <header class="heading">
        <h1>myschoolhouse.in</h1>
    </header>
    <nav>
        <ul class="nav-list">
            <li><a href="#" class="page-name">Home</a></li>
            <li><a href="#" class="page-name">About</a></li>
            <li><a href="#" class="page-name">Contact</a></li>
        </ul>
    </nav>
    <div class="container">
        <div class="left">
            <section>
                <h3>HTML Tutorial</h3>
            </section>
            <article>
                Lorem, ipsum dolor sit amet consectetur adipisicing elit. Velit consequatur qui aut molestias est architecto, non inventore. Amet,
               
            </article>
        </div>
        <div class="right">
            <aside>
                Lorem, ipsum dolor
            </aside>
        </div>
    </div>
    <footer class="footer-part">
        <h3>Footer</h3>
    </footer>
</body>
</html>

Result