How to center my web page using css and/or html?

[huntersmith22]

I'm building a web site with the material that I learned in college. With the material that I learned from my professor, all of my web pages stay on the left side of the screen.
With css and/or html, how can I get all of my material to be positioned in the center of any web browser?

[Stricker Online]

Previous answer is absolutely correct! You beat me to it ;)