body, html, header, section, div, ul, li, div, a, p, h1,h2,h3 { max-width: 640px;
	padding: 0;
	margin: 0;
	font-family: "微软雅黑"
}
li {
	list-style: none;
}
a {
	text-decoration: none;
}

.sp_header{height:50px;overflow:hidden;position: absolute; left: 0; top: 0; z-index: 1;z-index:1000;width:100%;background: url(../imagesm/nav.png) center repeat; max-width: 640px;}
.sp_logo{float:left;height:50px}
.sp_logo img{margin:auto;max-height:60px;}
.sp_nav{width:50px;float:right;position:relative;cursor:pointer;height:30px;margin-top:15px}
.sp_nav span{display:block;background:#fff;width:30px;height:2px;position:absolute;left:10px;transition:all ease 0.35s}
.sp_nav span:nth-of-type(1){top:0px}
.sp_nav span:nth-of-type(2){top:10px}
.sp_nav span:nth-of-type(3){top:20px}
.sp_nav_se span:nth-of-type(1){top:10px;transform:rotate(45deg)}
.sp_nav_se span:nth-of-type(2){width:0}
.sp_nav_se span:nth-of-type(3){top:10px;transform:rotate(-45deg)}
.sjj_nav{position:fixed;z-index:9;width:100%;height:calc(100% - 104px);font-size:14px;line-height:40px;top:-100%;left:0;overflow:auto;overflow-x:hidden;transition:top ease 0.35s;}
.nav_show{top:0px; padding-top: 60px; background: url(../imagesm/nav.png) center repeat; width: 100%; height: 100%; position: absolute; text-align: center;}
.sjj_nav ul {width:30%; margin: 0 auto;}
.sjj_nav ul li{border-bottom:1px #ddd solid;width: 100%; line-height:50px;font-size:1.3em;}

.sjj_nav ul li a{color:#fff;width:80%}