/**
 * 头部和底部样式
 **/

.top{
    background: url("../images/top_bg.png") no-repeat center top;
    width: 100%;
    height: 637px;
}

.nav{
    padding-top: 492px;
    padding-left: 105px;
    width: 1000px;
    margin: 0 auto;
    height: 45px;
}

.nav li{
    float: left;
    width: 168px;
    text-align: center;
    height: 45px;
    line-height: 45px;
}

.nav a{
    color: #FFF;
    font-size: 16px;
    text-decoration: none;
}

.bottom{
    background: url("../images/bottom_bg.png") no-repeat center top;
    width: 100%;
    height: 256px;
}