/*新导航条*/
.bal1{position:absolute; background:url(http://www.iscn.org.cn/statics/2018/images/bal1.png);z-index:999; width:150px;height:40px;margin-top:120px;margin-left:170px}
.bal2{position:absolute; background:url(http://www.iscn.org.cn/statics/2018/images/bal2.png);z-index:999; width:150px;height:40px;margin-top:120px;margin-left:455px}