JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8" />
        <title>Prototype</title>
        <link rel="stylesheet" media="screen" href="css/main.css" />
    </head>
    <body>
        <div id="content_wrapper">
            <div class="header">
                <img src="images/prototype.png" />
            </div>
            <div class="nav">
                <ul>
                    <li><a href="#">Home</a></li>
                    <li><a href="#">One</a></li>
                    <li><a href="#">Two</a></li>
                    <li><a href="#">Three</a></li>
                    <li><a href="#">Four</a></li>
                </ul>
            </div>
            <div class="content">
                <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>
            </div>
        </div>
    </body>
</html>

CSS

*
{
    margin: 0;
    padding: 0;
    outline: 0;
}

#content_wrapper
{
    width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
    border: 1px solid maroon;
}

.header
{
    height: 160px;
    border: 1px solid #8a2be2;
}

.nav
{
    float: left;
    width: 300px;
    margin-right: 900px;
    border: 1px solid olive;
    border-right: 3px solid #eee8aa;
}

.nav ul
{
    list-style: none;
}

.nav ul a
{
    display: block;
    width: 220px;
    margin: 6px 0;
    padding: 16px 4px;
    color: #111;
    text-decoration: none;
}

.content
{
    float: left;
    width: 900px;
    margin-left: 300px;
    border: 1px solid #2e8b57;
}

.footer
{

}

.clear
{
    clear: both;
}