If you thought about putting a <div style="text-align:center"> immediately after the <body> tag at the top of the page, and </div> just before the </body> tag at the end of the page, then you're correct. However, the text-align style is also supported directly in the <body> tag, which means you can forego the <div> tag and place the style="text-align:center" style directly in the <body> tag. Presto, the entire page is centered!