div.securitybox{width:998px;margin-left:auto;margin-right:auto;}
div.security{width:998px;height:320px;background-color:#FFFFFF;border:1px solid #99CCCC;padding:10px;display:table-cell;text-align:left;}
div.securityimg{width:350px;height:320px;float:right;}
div.securitycontent{width:500px;}