*{box-sizing:border-box}nav{text-align:center;padding:20px 10px}nav a{display:inline-block;padding:5px 15px;text-decoration:none;color:#fff;background-color:#444;border-radius:3px;text-transform:uppercase}aside{text-align:center;padding:20px 10px}aside img{display:inline-block;vertical-align:middle}footer{text-align:center;padding:20px 10px}.alignleft,img.alignleft{margin-right:1.5em;display:inline;float:left}.alignright,img.alignright{margin-left:1.5em;display:inline;float:right}.aligncenter,img.aligncenter{margin-right:auto;margin-left:auto;display:block;clear:both}