#right { height:57px; width:210px; background:#990033; float:right;}
#left { height:57px; width:210px; background:#990033; float:left;}
nav{
    margin: 0 auto;
    width:100%;
	
}
.main{
	/*background:#990033;*/
	background:#336699;
	width:100%;
	height:40px;
	font-family:"Microsoft YaHei ","微软雅黑","SimHei";
	font-size:1em;
}
ul{
  margin: 0px;
  padding: 0px;
  list-style: none;
}

ul.dropdown{ 
  width: 100%; 
}

ul.dropdown li{ 
  font-weight: bold; 
  float: left; 
  width: 168px; 
  position: relative;
  /*background: #990033;*/
	background: #336699;
}

ul.dropdown a:hover{ 
  /*color: #af0000;*/
	color: #003399; 
}

ul.dropdown li a { 
  display: block; 
  padding: 10px 8px;
  color: #fff;
  position: relative; 
  z-index: 88; 
  text-align: center;
  text-decoration: none;
  font-weight: 300;
}

ul.dropdown li a:hover,
ul.dropdown li a.hover{ 
  /*background: #333366; */
	background: #003399;
  position: relative;
  /*color: #fff;*/
	color: #ffffff;
	
}


ul.dropdown ul{ 
 display: none;
 position: absolute; 
  top: 0; 
  left: 0; 
  width: 180px; 
  z-index: 1000;
}

ul.dropdown ul li { 
  font-weight: normal; 
  /*background: #333366; */
	background: #003399;
	/*color: #000; */
  color: #336699; 
  border-bottom: 1px solid #ccc; 
}

ul.dropdown ul li a{ 
  display: block; 
  /*color: #34495e !important;*/
	color: #336699 !important;
  /*background: #eee !important;*/
	background: #fff !important;
} 

ul.dropdown ul li a:hover{
  display: block; 
  /*background: #333366 !important;*/
  color: #fff !important;
	  background: #003399 !important;
	border-top: 1px solid #ccc; 
} 

.drop > a{
  position: relative;
}

.drop > a:after{
  content:"";
  position: absolute;
  right: 10px;
  top: 40%;
  border-left: 5px solid transparent;
  border-top: 5px solid #333;
  border-right: 5px solid transparent;
  z-index: 999;
}

.drop > a:hover:after{
  content:"";
   border-left: 5px solid transparent;
  border-top: 5px solid #fff;
  border-right: 5px solid transparent;
}