/***************************内页海报样式***************************/
.nbanners{ width:auto; height:240px; background: url(../images/case_02.jpg) repeat-x;}

.nbannerd{ width:auto; height:240px;  background: url(../images/con_02.jpg) repeat-x; }
.nbannera{ width:auto; height:240px;  background: url(../images/about_02.jpg) repeat-x; }
.nbannerb{ width:auto; height:240px;  background: url(../images/service_02.jpg) repeat-x; }

.nbanners-con{ width:980px; height:240px; margin:0 auto;}