/*属性重置*/
html,body{margin:0;padding:0;background-color:#fff;}
img{display:block;}
ul,li{list-style:none;padding:0;margin:0;}
p,h4,h5,h6,a,span{margin:0;padding:0;}
a{text-decoration:none;}
.clearfix{clear:both;}

/*顶部logo等*/
.top_box{width:100%;}
.top_center{width:1200px;margin:0 auto;background-color:#fff;padding:13px 0;}
.top_center .logo{float:left;}
.top_center .sousuo_box{float:left;margin:7px 0 0 40px;}
.top_center .sousuo_box input{width:250px;height:40px;padding-left:10px;border:solid 1px #0c61c6;box-sizing:border-box;border-top-left-radius:6px;border-bottom-left-radius:6px;float:left;}
.top_center .sousuo_box .sousuo{float:left;width:60px;height:40px;background-color:#0c61c6;border-top-right-radius:6px;border-bottom-right-radius:6px;cursor:pointer;}
.top_center .sousuo_box .sousuo img{float:left;margin:12px 3px 0 5px;}
.top_center .sousuo_box .sousuo p{float:left;color:#fff;font-size:14px;line-height:40px;}
.top_center .denglu_box{float:right;margin:17px 0 0 0;}
.top_center .denglu_box a{color:#0c61c6;display:inline-block;font-size:16px;padding:2px 15px;}
.top_center .denglu_box .denglu{border-right:solid 1px #808080;}
/*登录后显示用户名*/
.top_center .denglu_box_tab{float:right;}
.top_center .denglu_box_tab .yhxx{float:left;margin:5px;}
.top_center .denglu_box_tab .yhxx a{display:block;font-size:12px;text-align:right;}
.top_center .denglu_box_tab .yhxx .yhm{color:#0c61c6;}
.top_center .denglu_box_tab .yhxx .tc{color:#999;}
.top_center .denglu_box_tab .tx_box{float:left;}
.top_center .denglu_box_tab .tx_box img{width:40px;height:40px}

/*智筑论坛导航栏*/
.nav_box{width:100%;}
.nav_center{width:1200px;margin:0 auto;}
.nav_center ul{background-color:#0c61c6;}
.nav_center ul li{float:left;margin-right:1px;}
.nav_center ul li a{display:block;line-height:40px;background-color:#0a42b2;color:#fff;padding:0 20px;}

/*底部*/
.footer_box{width:100%;background-color:#4d4d4d;}
.footer_center{width:1200px;margin:0 auto;}
.footer_center p{color:#fff;font-size:12px;text-align:center;line-height:40px;}