Thanks a lot, Paul. At first, I was looking at the source of the main page but when I looked further, I did realise that most of your demos had the CSS in the head. Also, I have been using the method given by runremix to view the css codes of the files which are linked to css files.
I do not have firefox but plan to download it soon and with the help of you and my other SitePoint friends, hope to upload a website and show it to you soon. Thanks once again.