@charset "UTF-8";
/* CSS Document */
* {
  margin: 0;
  padding: 0;
  font-size: 0;
}
body,html{
  
  width: 100%;
  background-image:url("images/bj.jpg");
  background-repeat: no-repeat;
  background-position: center top;
  background-size: cover;
  overflow-x: hidden;
}

a{
  text-decoration:none;
}
img{
  width: 100%;
}
/* 导航 */
.nav{
  height: 100%;
  width: 100%;
  margin: 0 auto;
  overflow-x: hidden;
  margin-bottom: 0;
}

.nav ul li1{
  width: 33.33%;
  float: left;
  	
}
.nav ul li2{
  width:33.33%;
  float: left;
  	
}
.nav ul li3{
  width:33.33%;
  float: right;
  	
}
.nav ul img{
  display:block;
  width:100%;	
}
.nav a {
  list-style: none;/* 不使用项目符号 */
  text-decoration: none;/* 不使用下划线 */
  
}