def html_wrap(html_string):
    """Add an html-head-body wrapper around an html string."""
    html_prefix="""<html>
        <head>
            <title>HTML CSS TESTS</title>
            <link rel="stylesheet" type="text/css" href="tests/manual html-css tests/html-css.css">
        </head>
        <body>"""
    html_postfix="""
    </body></html>
    """    
    return html_prefix + html_string + html_postfix