JSFiddle - React, Tailwind, and code Playground

HTML

<body>
    <header>
        <!-- Headerbereich -->
    </header>
    <nav id="left">
        <!-- Linke Navigation -->	<strong>Hauptnavigation</strong>

        <ul>
            <li><a href="#" title="Link 1">Link 1</a>

            </li>
            <li><a href="#" title="Link 2">Link 2</a>

            </li>
            <!-- weitere Links -->
        </ul>
    </nav>
    <section>
        <!-- Inhaltsbereich -->
        <article><p>Inhalt 1 (zB Blogeintrag)</p></article>
        <article><h2>Inhalt 2 (zB zweiter Blogeintrag</h2>
            <p>Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.</p></article>
    </section>
    <nav id="right">
        <!-- Rechte Navigation --> <strong>ShopmenĂĽ</strong>

        <ul>
            <li><a href="#" title="Link1">Link1</a>

            </li>
            <li><a href="#" title="Link2">Link2</a>

            </li>
            <!-- Andere Links vor Shopmenu -->
            <li><a href="#" title="Shop">Zum Shop
                <ul>
                    <li><a href="#" title="Link1">Link1</a>

            </li>
            <li><a href="#" title="Link2">Link2</a>

            </li>
            <!-- Weitere Shopmenu Links -->
        </ul>
        </li>
        </ul>
    </nav>
    <footer>
        <!-- Footerbereich -->
    </footer>
</body>

CSS

nav {
    width: 20%;
}
nav#left {
    float:left;
}
nav#left ul {
    background: red;
    color: white;
}
nav#right {
    background: green;
    float:right;
}
nav#right ul li {
    list-style-type: none;
}
section {
    background: lightblue;
    width:60%;
    margin:0 auto;
    float: left;
}