.header{
	float: left;
	width: 100%;
	min-width: 1200px;
	height: 90px;
	background: #186c6c;
}
.st-logo{
	float: left;
	width: 204px;	
	height: 90px;
	line-height: 90px;
	overflow: hidden;
}
.st-logo img{
	vertical-align: middle;
}
.st-menu{
	float: left;
	margin-left: 30px;
	width: 700px;
	height: 90px;
}
.st-menu > ul > li {
    float: left;
    height: 90px;
    position: relative;
    -webkit-transition: all .8s;
    -moz-transition: all .8s;
    -ms-transition: all .8s; 
    -o-transition: all .8s;
    transition: all .8s;
}
.st-menu > ul > li > a {
    display: block;
    color: #fff;
    height: 90px;
    line-height: 90px;
    padding: 0 15px;
    font-size: 18px;
    position: relative;
}
.st-menu > ul > li.active s,
.st-menu > ul > li.this-hover s {
    display: block;
    width: 0;
    height: 0;
    position: absolute;
    left: 50%;
    bottom: 0;
    margin-left: -4px;
    border-bottom: 4px solid #fff;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
}
.down-nav {
    display: none;
    min-width: 1200px;
    height: 44px;
    position: absolute;
    left: 0;
    top: 90px;
    z-index: 99999;
    border-bottom: 1px solid #e9e9e9;
    background: #fff;
}

.this-hover .down-nav {
    display: block;
}

.sub-list {
    height: 44px;
    line-height: 44px;
    position: absolute;
    top: 0;
    overflow: hidden;
    font-size: 0;
}

.sub-list a {
    padding: 0 10px;
    font-size: 14px;
    white-space: nowrap;
}

.sub-list a:hover {
    color: #009fde;
}
.st-option{
	float: right;
	line-height: 90px;
}
.st-option > a{
	display: inline-block;
	margin-left: 10px;
	font-size: 14px;
	color: #fff;
}
.st-option .serach{
	display: inline-block;
	vertical-align: middle;
	height: 90px;
	width: 42px;
	position: relative;
}
.st-option .serach .serach-ico{
	position: absolute;
	top: 34px;
	right: 10px;
	cursor: pointer;
	width: 22px;
	height: 22px;
	background: url(../images/index-ico.png) no-repeat;
	background-position: -135px -76px;
}
.st-option .serach:hover .serach-box{
	display: block;
}
.st-option .serach .serach-box{
	position: absolute;
	z-index: 999;
	left: 50%;
	top: 88px;
	margin-left: -160px;
	width: 320px;
	height: 44px;
	background: #fff;
	border-radius: 10px;
	-webkit-border-radius: 10px;
	-ms-border-radius: 10px;
	-moz-border-radius: 10px;
	-o-border-radius: 10px;
	display: none;
}
.st-option .serach .serach-box:before{
	content: "";
	position: absolute;
	left: 50%;
	top: -6px;
	margin-left: -5px;
	width: 0;
	height: 0;
	border-bottom:6px solid #fff;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
}
.st-option .serach .serach-box .txt{
	float: left;
	margin-left: 8px;
	width: 270px;
	height: 44px;
	font-size: 14px;
}
.st-option .serach .serach-box .btn{
	float: left;
	width: 24px;
	height: 24px;
	margin-top: 10px;
	background: url(../images/index-ico.png) no-repeat;
	background-position: -180px -76px;
	cursor: pointer;
}