<!DOCTYPE html>
<html>
    <head>
        <style>
            body {
                background: #333;
                color: #f6f6f6;
                line-height: 300px;
                font-size: 20em;
                overflow: hidden;
                text-align: center;
            }
        </style>
    </head>
    <body>
        {{ arg }}
    </body>
</html>
