.invisible{position:absolute;left:-999em;top:auto;width:1px;height:1px;overflow:hidden}.first{margin-top:0!important}.last{margin-bottom:0!important}.alpha{margin-left:0!important}.omega{margin-right:0!important}.text-right{text-align:right}.text-justify{text-align:justify}.text-center{text-align:center}.clear{clear:both}.clearblock{clear:both;overflow:hidden;height:0}