This style is really meant to be used as a Core2 style. As explained, you need to create a Core2 layout layer then copy/paste the code from the first box into your layer. It gave me no errors. However, the coding is outdated and you'll need to remove these to be able to see the style correctly:

"""<style type="text/css">""";
start_css();
"""
<!--


--->
""";
end_css();
"</style>\n";

and replace them with """ and """; respectively.