I am posting this because it was one of my first issues with designing. I could not, for the life of me, figure out how to get my site's wrapper div (container) to center on the page.
Here's the css answer, it's pretty simple:
#wrapper {
width: 950px ;
margin-left: auto ;
margin-right: auto ;
}
Remember, this is the wrapper div, it's the div that wraps around the complete site. You don't need to have any other margins or padding or anything like that for this div. Note there is no float, change the width to the width of your site. Set the left and right margin to auto - that's it.
I hope this helps.