a {font-size: 12px; color: #2b2b2b; text-decoration: none;cursor: pointer;}
img {display: inline-block; border: 0;}
.fl { float: left;}
.fr { float:right;}
.clear {clear: both;}
.mt10{margin-top:10px}
.mt20{margin-top:20px}
.mt45{margin-top:45px}
.mt55{margin-top:55px}
.mt65{margin-top:65px}
.pt55{padding-top:55px}

.banner_seo { width: 100%;height: 462px; background:url(../images/seo_banner1.jpg) no-repeat center}
.zhu{width:1020px;margin:0 auto}
.title{font-size:36px;color:000;font-weight:700;text-align:center;background:url(../image/line.png) no-repeat center bottom;height:70px}

.yuan{display:block;width:70px;height:70px;background:#fff;border-radius:1000px;border:3px solid #1580e2;text-align:center;line-height:70px;font-size:36px;color:#107de1;position:absolute;z-index:99}
.que{display:block;background:#f0f0f0;border-radius:10px;width:450px;height:60px;margin-left:20px;position:relative;top:10px;font-size:16px;color:#333;line-height:60px;text-indent:65px}
.yuan:hover{background:#1580e2;color:#fff}

.liaojie li{width:339px;height:60px;background:#eee;font-size:20px;color:#333;text-align:center;line-height:60px;margin-left:1px;cursor:pointer;float:left}
#lib_Tab3 li a.hover{display:block;background:#107de1;color:#fff;width:339px;height:60px;font-size:20px;text-align:center;line-height:60px;margin-left:1px;cursor:pointer}
.fangan{width:195px;height:148px;background:#65b72f;font-size:20px;color:#fff;text-align:center;font-weight:700}
.fangan-text{width:310px;height:147px;border-bottom:1px solid #eee;font-size:12px;color:#000;margin-left:5px}
.youhu{position:absolute;background:url(../images/shixiao.jpg) no-repeat;width:120px;height:112px;z-index:99;margin-left:20px}
.youhu2{position:absolute;background:url(../images/xiaoguo.jpg) no-repeat;width:120px;height:112px;z-index:99;margin-left:20px}
.youhu3{position:absolute;background:url(../images/xingjiabi.jpg) no-repeat;width:120px;height:112px;z-index:99;margin-left:20px}
.youhu4{position:absolute;background:url(../images/tiyan.jpg) no-repeat;width:120px;height:112px;z-index:99;margin-left:20px}
.span{width:340px;font-size:24px;color:#000;font-weight:700;display:block;margin:5px 0 0 120px}
.youhua2{width:480px;height:87px;background:#eee;position:relative;top:47px}
.youhua2 span{font-size:14px;color:#000;display:block;padding:20px 0 0 140px;line-height:24px}
.xuan1{font-family:Arial;font-weight:700;font-size:42px;color:#2988e1;float:left; margin:0; padding:0; outline: none; line-height:46px}
.xuan2{font-size:24px;color:#2988e1;height:52px;line-height:44px;float:left}
.xuan3{background:url(../images/dian.jpg) no-repeat left center;font-size:14px;color:#666;padding-left:12px;height:22px;margin-left:5px}
.seodi{ width:100%; height:100px; position:relative}
.seodi img{width: 1920px;position: absolute; left: 50%;top: 0px;display: block; margin-left: -960px;}