CSS Coding

Well what can I say about CSS... Only that's its bloody complicated at times but after a few hours of trial and error I got my website to look a little bit like I imagined it. The CSS was a bit confusing for the body tag in that I had to put body *{margin:0;} and body{margin:0;} to make the whole website move to the top of the page and let the site flow a bit better, the code worked but still not a hundred percent sure what the * is used for (Chris if your reading this and know why the * is needed please leave me a comment to let me know).