JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML> 
<html> 
    <head> 
        <meta charset="utf-8"> 
        <title>Test</title> 
        <link rel="stylesheet" href="test.css" type="text/css" media="screen" /> 
    </head> 
    <body> 
        <div id="wrapper"> 
            <div id="header"> 
                <h1>Test</h1>        
            </div> 
            <div id="main">
            </div>
            <div id="footer">
            </div>
        </div> 
    </body> 
</html>

CSS

* {
    margin: 0;
    padding: 0;
}

body {
    margin: 0 auto;
    width: 760px;
}

#wrapper {
    background-color: #CCCCCC;
}

#splash {
    text-align: center;
    background: black;
    padding-bottom: 20px;
}

#header {
    margin-left: 30px;
    background-color: red;
}