body{ background-color:#232323;background-image:url("imagesbg.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("imagesjieshaolan.jpg");background-repeat:no-repeat;height:215px; width:1000px; margin:13px auto;}
.lefttext{ float:left; width:500px; margin: 0 20px 20px 0; _margin-top:20px; !margin-top:20px; color:#483018;}
.titlebot{ margin-top:8px; font-family:Arial, "ËÎÌå"; font-size:20px; font-weight:400;}
.jieshaowen{ font-family:Arial, "ËÎÌå"; font-size:12px;  line-height:24px;}
.righttext{ float:left; width:300px; margin: 0 20px 20px 0; margin-left:100px;_margin-top:20px; _margin-left:100px;!margin-top:20px; !margin-left:100px; color:#000000;_margin-left:100px;}
.howtuuse{ font-family:Arial, "ºÚÌå"; font-size:20px; font-weight:400; color:#fdad78; width:1000px; margin:-15px auto; padding-left:20px; _margin-top:-5px; £¡margin-top:5px;}
.tupian{ width:1000px; margin:25px auto; height:713px; }
.tupian1{ width:1000px; margin:-25px auto;_margin:-25px auto; height:297px;}
.footer{ height:50px; width:1000px; margin:40px auto; font-family:"ËÎÌå", Arial; font-size:12px; color:#999999; line-height:18px;}
.footer a{color:#4aacdf;text-decoration:none;}
.footer a:hover{color:#ffffff;text-decoration:underline;}