body{
    font-family: Tahoma, Verdana, Arial, sans-serif;
    margin:0 auto;
    padding:0;
    font-family:"微软雅黑", "宋体", Arial, Helvetica,}
#top{width:100%;height:118px;background-image:url(img1.png) ;position:absolute;z-index: -1;}
h1{ width:1002px;height:118px;  margin:0 auto;}
.img1{padding-left:32px; padding-top: 26px;}
.img2{padding-left:140px;padding-top:8px;}
#header{width:1002px; margin:0 auto;}
#nav{width:1002px;height:57px;margin-top: 1px; background-image: url(imgnav.png);}