.dede_pages{clear: both;padding: 10px 0;float: left;text-align: center;width: 100%;}   
.dede_pages ul{display: inline-block;}          
.dede_pages li{float: left;font: 15px/20px "微软雅黑";padding: 5px;background: #e4e4e4;margin: 0 2px;list-style: none;width: auto;}
.dede_pages li span{margin: 0;padding: 0;}       
.thisclass{background: #5495f4 !important;color: white;}

iframe{border: 0;width: 100%;height: 583px;}