/* banner*/
.b1{width: 100%;height:200px;position: absolute;left: 50%;top:130px;margin-left: -980px;}

/*内容*/
.content{width: 80%;margin:0 auto;_height:400px;min-height:400px;}

/*左边目录*/
.mulu {width: 19%;background: #fff;height:auto;float: left;}
.mulu li{width: 100%;line-height: 40px;text-align: center;}
.mulu li:hover{background:#f2f6f9 url(../img/jiantou.png) no-repeat 95% center;}
.mulu li a{width: 100%;display: block;}
.mulu .dianji{background:#f2f6f9 url(../img/jiantou.png) no-repeat 95% center;}
/*右边内容*/
/*社会公益*/
.shehuigongyi{text-align: left;  float:right;
  width: 80%; background-repeat:no-repeat; background-position:top center;}