.nav{ position: relative;z-index: 1\9;display:inline-block; width:100%; /* background-position:left -536px; */ margin-bottom:15px; font-family:"微软雅黑";background-color: #286594;}
.nav ul{ width:100%; height:38px; background-position:left -72px; }
.nav li{ float:left; height:100%;position: relative;z-index: 2\9;background-repeat:no-repeat; background-position:right -237px;}
.nav li a{ float:left; display:block; width:120px; height:100%; line-height:270%; color:#fefefe; font-size:14px;text-align:center; }
/* .nav li a:hover,.nav li a.on{background-position:left -116px; text-decoration:none;} */
.nav li a.on{background-color: #144269;}
.nav li a:hover{background-color:#1d527b;text-decoration: none;color:#fefefe;}


/* ul.submenu{position: absolute;top: 38px;left:100px;z-index: 1000;width:990px;background:#DDDDDD;padding-top:2px;} */
ul.submenu{width:145px;height:auto;position: absolute;top: 38px;left: 0;z-index: 1000;background:#1d527b;list-style: none;}
ul.submenu li,ul.submenu li a{width:100%;height:28px;line-height:28px;font-size:14px;}
ul.submenu li:hover{background-color:#2e6fa1;text-decoration: none;}
.nav ul.submenu li a{background: url(../../images/portal/ico.png) no-repeat -202px -435px;text-align: left;padding-left:35px;box-sizing:border-box;}