/**
*在Position属性值为absolute的同时，
*如果有一级父对象（无论是父对象还是祖父对象，或者再高的辈分，一样）
*的Position属性值为Relative时，则上述的相对浏览器窗口定位将会变成相对父对象定位，
*这对精确定位是很有帮助的。
*/
/*nav导航盒子*/
div.nav{
    width: 835px;
    height:113px;
    line-height:113px;
    text-align: center;
    font-size: 16px;
    padding-left: 52px;
    position: relative;
    float: left;
	z-index:999;
}
div.nav1{ width:100%; height:113px;position: relative; margin:0 auto;}
/*nav-main*/
ul.nav-main{
    width: 100%;
    height:113px;
    list-style-type: none;
	margin:0 auto;
	position: relative;
}
ul.nav-main span{
    display: inline-block;
    margin-left: 6px;
    width:15px;
    height:15px;
    background: url('../img/down-icon.png') no-repeat;
}
ul.nav-main:hover span{
    display: inline-block;
    margin-left: 6px;
    width:15px;
    height:15px;
    background: url('../img/down-icon2.png') no-repeat;
}
/*图标向上旋转*/
.hover-up{
    transition-duration: .5s;
    transform: rotate(180deg);
    -webkit-transform: rotate(180deg);
}
/*图标向下旋转*/
.hover-down{
    transition-duration: .5s;
    transform: rotate(0deg);
    -webkit-transform: rotate(0deg);
}
/*导航条设置*/
ul.nav-main>li{
    width: 130px;
    height: 100%;
    display: block;
    float: left; 
	color:#515151; 
    font-family:"微软雅黑";
	font-size:16px;
    cursor: pointer;
}
ul.nav-main>li:hover{ color:#e52020;font-weight:bold;}
ul.nav-main>li:hover a{color:#e52020;font-weight: bold;}
ul.nav-main>li a{
	color:#333333; 
}
ul.nav-main>li a:hover{
    color:#e52020;font-weight: bold;
}
/*隐藏盒子设置*/
div.hidden-box{
    width: 130px;
    border-top: 0;
    position: absolute;
    display:none;
	background:#fff;
    top:75px;
	filter:alpha(opacity=90);  
	-moz-opacity:0.9;  
	-khtml-opacity: 0.9;  
	opacity: 0.9;  
}
.hidden-box>ul{
    list-style-type: none;
    color: #515151;
	padding-top:15px;
	padding-bottom:15px;
    cursor: pointer;
}
.hidden-box>ul li{
	height:36px;
	line-height:36px;
	font-size:15px;
	font-family:"微软雅黑";  
}
.hidden-box>ul li a{color: #515151;}
.hidden-box li:hover a{
    color: #d80111;font-weight: bold;
}
/*隐藏盒子位置设置*/
.hidden-loc-about{
    left:120px;
}
.hidden-loc-product{
    left:260px;
}
.hidden-loc-news{
    left:380px;
}
.hidden-loc-fuwu{
    left:522px;
}