Thank you Charles for that link, it has turned on the lights about styles for me. I understand the principle behind it now. You may have sent me the link before but I don't know how to get back to old questions on my account in this forum, so sometimes ask the same question or get the same answer. Forgive me for the waste of your time. I know what you go through as I used to do Google support and even though the answers were in the KB people could not find them either because they did not know the words to use to search or some other similarly complex situation. We really do try to use the right words to find an answer but sometimes it escapes us.