div { position: relative; }

/* does not support IE 6/7 */
.clearfix:after {
  content:"";
  display:table;
  clear:both;
}

/* WordPress Presentational Classes*/
.aligncenter { display:block; margin:0 auto }
.alignleft { float:left }
.alignright { float:right }
.wp-caption { border:1px solid #666; text-align:center; background:#ccc; padding:10px; margin:10px }