body {  font: 16px "microsoft yahei", Arial, Helvetica, sans-serif;  margin: 0;  padding: 0;font-family:微软雅黑; }
a {  text-decoration: none;  cursor: pointer;}
div, b, p, h1, h2, h3, h4, h5, h6, ul, li, dl, dd, header, footer {  margin: 0;  padding: 0;  list-style: none;  }
em, i, b, strong {font-style: normal;}
.fr{float:right;}
.fl{float:left;}
.ct{text-align: center;}
.hd{overflow: hidden;}
.box1{background: url('bg1.png')no-repeat center center ; height:369px;}
.box2{background: url('bg2.png')no-repeat center center ; height:689px;}
.box3{background: url('bg3.png')no-repeat center center ; height:487px;}
.box4{background: url('bgt.png')no-repeat center center ; height:741px;}