#top{max-width:750px;margin:0 auto}#top>header{width:267px;margin:0 auto}#top>nav{width:auto;margin:0 auto}#main{clear:both;max-width:750px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;margin:10px auto 0;padding:1ex 2em 2em}#content_area{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}body>footer{max-width:650px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;margin:2em auto 0}