.header{
  width:100%;
  height:auto;
  float:left;
}
.header .logo{
  width:100%;
  height:250px;
  float:left;
  background:url(../images/headbg.jpg) no-repeat;
}
.logo .logo_main{
  width:1200px;
  height:132px;
  margin-left:auto;
  margin-right:auto;
}
.logo_main .logoleft{
  width:642px;
  height:132px;
  float:left;
  background:url(../images/logo.png) no-repeat;
}
.logo_main .logoright{
  width:213px;
  height:30px;
  float:right;
  margin-top:40px;
  font-family:"微软雅黑";
  font-size:14px;
  color:#000000;
}
.logo_main .logoright a{
  color:#000000;
}
.logo .header_nav{
  width:100%;
  height:76px;
  float:left;
}
.header_nav .header_nav_main{
  width:1200px;
  height:100%;
  margin-left:auto;
  margin-right:auto;
  background:url(../images/daohangbg.png) no-repeat;
}
.header_nav_main ul{
  width:100%;
  height:60px;
  float:left;
  margin-top:13px;
}
.header_nav_main ul li{
  width:133px;
  height:60px;
  float:left;
  color:white;
  line-height:40px;
  text-align:center;
  overflow:hidden;
}
.header_nav_main ul .li1{
  width:133px;
  height:60px;
  background:url(../images/lanmuxbg.png) no-repeat;
  background-size:100% 100%;
  float:left;
}
.header_nav_main ul li .cn{
  width:133px;
  height:20px;
  float:left;
  font-family:"微软雅黑";
  font-size:18px;
  text-align:center;
}
.header_nav_main ul li .en{
  width:133px;
  height:20px;
  float:left;
  font-family:"Arial";
  font-size:12px;
  text-align:center
}
.header_nav_main ul li .en1{
  width:120px;
  height:20px;
  float:left;
  font-family:"Arial";
  font-size:12px;
  margin-left:10px; 
  margin-right:10px;
}
.header_nav_main ul li a{
  width:100%;
  height:100%;
  float:left;
  color:white;
}
.header .header_banner{
  width:100%;
  height:auto;
  float:left;
}
.header_banner img{
  width:100%;
  height:auto;
  float:left;
}