#about_desc{
	width: 100%;
	border-top: 1px solid #EEE;
}
#about-content{
	box-sizing: border-box;
	min-height: 500px;
	overflow: hidden;
}
#menu-left{
	float: left;
	width: 258px;
	min-height: 500px;
	border-right: 1px solid #EEE;
	display: inline-block;
}
.about-content_item{
	min-height: 500px;
	float: left;
	display: inline-block;
	clear: right;
	padding: 57px 0 70px 60px;
}
#header-outter {
    border-bottom: none;
}
.about-content_head{
	display: none;
}
.menu-left-list dt{
	color:#222222;
	height: 45px;
	line-height: 45px;
	border-bottom:1px solid #EEE;
	font-weight:800;
	position:relative;
}
#menu-left{
	padding-top: 35px;
}
.pro_dl{
	position: absolute;
	width: 12px;
	height: 7px;
	background: url(../images/product_intro_ico.png) 1px 1px;
	right: 15px;
	top: 19.5px;
}
.menu-left-list dd{
	height: 50px;
	padding-left: 24px;
	line-height: 50px;
	color: black;
	font-family: "Helvetica Neue","Hiragino Sans GB","Microsoft YaHei";
	font-size:14px;
	display: none;
}
.menu-left-list a:hover{
	color:#1AAD19;
}
.dd-selected{
	color:#1AAD19;
	background: #FBFBFB;
	border-right: 4px solid #1AAD19;
}
.about-content_head{
	height: 175px;
	border-bottom: 1px solid #EEE;
}
.about-content_head h3{
	color:#222222;
	font-weight: 600;
	font-size: 22px;
	width: 100%;
}
.part h3 {
    font-size: 22px;
    font-weight: 700;
    margin: 50px 0 10px;
}
.selected{
	color: #1AAD19;
}