header .nav a { 
  display: inline-block;
  width: 100px;
  height:30px;
  line-height: 30px;
  text-align: center; 
  font-size: 21px;
  font-weight: 500;
  color: #333333;

  
  text-decoration: none;
  color: #fff;
}
 header {

  display: inline-block;
	
  background:url(../img/indexh.png) no-repeat;	
  position: relative;
  width:100%;
  height:100px;
  top:0px;
}
header .nav {
  
  display: inline-block;
  float:right;
  margin-right:15%;
  margin-top: 55px;
  font-family: 楷体,serif;
}
 header .nav a:hover{ 
  color: red;
}