Thanks guys. I got it figured out I just added
.center {text-align: center}
The <center> command works without css, but when validating the page it says that's incorrect. It would center the text but give me validation errors.
I've added this to my css stylesheet which is included in all my webpages:
center {text-align: center}
It does what it's supposed to however when I go to the W3 Validator. It says "element "CENTER" undefined". Anyone know why this is?