.f_l{float:left}.f_r{float:right}.clearfix:after{visibility:hidden;display:block;font-size:0;content:".";clear:both;height:0}.main_content{margin:auto;width:800px}.desc{width:300px}.image img{border:1px solid silver;padding:5px;width:450px}#data option:selected,#data ::-moz-selection{background:red}.finder{height:135px!important;border-bottom:1px dotted gray}