JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>jsFiddle Example</title>
    <style type="text/css">
        article, section, aside, header, nav { display: block; }
        
        #container { 
            margin: 0px auto; 
            width: 960px; 
            position: relative;
        }
        section { 
            float: left;
            width: 685px; 
            left: 0px; 
            
            background-color: #ccc;
        }
        section h2 {
            padding: 10px;
        }
        section h3 { 
            font-size: 32px; 
            color: #ffcc00; 
            font-weight: bold; 
            padding: 10px; 
            border-bottom-width: 2px; 
            border-bottom-style: solid; 
            border-bottom-color: #2A2A2A; 
            margin-bottom: 18px; 
            margin-left: 10px;
            margin-right: 10px;
        }
        
        aside {  
            width: 270px;  
            right: 0px; 
            top: 0px; 
            float: left;
            
            background-color: #000;
        }

        aside h3 { 
            border-bottom-width: 2px; 
            border-bottom-style: solid; 
            border-bottom-color: #2A2A2A; 
    
            padding-bottom: 6px; 
            padding-top: 11px; 
    
            margin-bottom: 0px; 
    
            color: #F0E29A; 
            font-size: 14px; 
            letter-spacing: -0.5px; 
            text-transform: uppercase; 
    
            background-color: #fff;
        }
    </style>
</head>
<body>
    <div id="container">
        <article>
            <section>
                <p>Section Text</p>
            </section>
            <aside>
                <p>Aside Text</p>
            </aside>
        </article>
    </div>
</body>
</html>