body{ background-color:#232323;background-image:url("../images/bg.jpg");background-position:center top;background-repeat:no-repeat;}
.toprukou {height:39px; padding-top: 100px; width:1000px; margin:0 auto;}
.nav_dhrs {float:right;height:30px;padding-left:10px;
width:135px;}
.nav_dhrs img{border:none;}
.nav_design {background-position:right center;
background-repeat:no-repeat;float:right;height:30px;padding-left:10px;width:135px;
}
.shu{ height:200px; width:40px; float:left;}
.nav_design img{border:none;}
.jieshao{
	background-image:url("../images/jieshaolan.jpg");
	background-repeat:no-repeat;
	height:210px;
	width:1000px;
	margin-top: 13px;
	margin-right: auto;
	margin-bottom: 0px;
	margin-left: auto;
}
.lefttext{
	float:left;
	width:580px;
    color:#483018;
	margin-top: 0;
	margin-right: 20px;
	margin-bottom: 0;
	margin-left: 40px;
	_margin-left: 20px;
}
.titlebot{
	margin-top:10px;
	font-family:Arial, "宋体";
	font-size:20px;
	font-weight:400;
	margin-bottom: 5px;
}
.titlebot1{
	margin-top:20px;
	font-family:Arial, "宋体";
	font-size:20px;
	font-weight:400;
	margin-bottom: 5px;
}
.jieshaowen{ font-family:Arial, "宋体"; font-size:12px;  line-height:18px; text-indent:2em;}
.righttext{ float:left; width:300px; margin: 0 20px 20px 0; margin-left:20px; color:#000000; }
.howtuuse{ font-family:Arial, "黑体"; font-size:20px; font-weight:400; color:#fdad78; width:1000px; margin:0 auto; padding-left:20px; padding-top:7px; padding-bottom:7px;}
.tupian{
	width:1000px;
	height:522px;
	margin-top: 0px;
	margin-right: auto;
	margin-bottom: 25px;
	margin-left: auto;
}
.tupian1{ width:1000px; margin:-25px auto;_margin:-25px auto; height:297px;}
.footer{
	height:50px;
	width:1000px;
	margin:40px auto;
	font-family:"宋体", Arial;
	font-size:12px;
	color:#999999;
	line-height:18px;
	text-align: center;
}
.footer a{color:#4aacdf;text-decoration:none;}
.footer a:hover{color:#ffffff;text-decoration:underline;}