.fl {
    float: left;
}
.fr {
    float: right;
}
.text-indent2 {
    text-indent: 2em;
}
.text-justify {
	text-align: justify;
}
.text-center {
	text-align: center;
}
.text-left {
    text-align: left;
}
.text-right {
    text-align: right;
}
.bold {
	font-weight: bold;
}
.mid-img>img {
    vertical-align: middle;
}
.dis-inline-block {
	display: inline-block;
}
.fs18 {
	font-size: 18px;
}
.fs16 {
    font-size: 16px;
}
.fs20 {
    font-size: 20px;
}
.fs22 {
    font-size: 22px;
}
.fs24 {
    font-size: 24px;
}
.lh28 {
	line-height: 28px;
}
.lh30 {
    line-height: 30px;
}
.lh35 {
    line-height: 35px;
}
.lh40 {
    line-height: 40px;
}
.lh90 {
	line-height: 90px;
}
.mt10 {
    margin-top: 10px;
}
.mt15 {
    margin-top: 15px;
}
.mt25 {
	margin-top: 25px;
}
.mt30 {
    margin-top: 30px;
}
.mt50 {
	margin-top: 50px;
}
.mr10 {
    margin-right: 10px;
}
.mr100 {
    margin-right: 100px;
}
.mlr100 {
    margin: 0 100px;
}
.ml10 {
    margin-left: 10px;
}
.pl40 {
    padding-left: 40px;
}
.orange {
	color: rgb(222, 113, 98);
}
html, body, div, p, ul, ol, li, span {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}
body {
	margin: 0 auto;
	background: #ffffff;
}
p {
    margin-top: 10px;
}
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 63px;
    line-height: 60px;
    border-bottom: 3px solid #bb8633;
    background: #2a2a2c;
    z-index: 10;
}
.header-contain {
    position: relative;
    width: 900px;
    height: 60px;
    line-height: 60px;
    margin: 0 auto;
    background: #2a2a2c;
}
.header-contain * {
    vertical-align: top;
}
.header-contain img {
    vertical-align: middle;
}
.brandText {
    font-size: 20px;
    font-weight: bold;
    color: #bb8633;
    margin-right: 40px;
}
.nav-item {
    position: relative;
    display: inline-block;
    height: 100%;
    background: #2a2a2c;
    transition: all 0.2s linear;
}
.nav-item:hover {
    color: #ffffff;
    background: #bb8633;
}
.nav-item:hover>a {
    color: #ffffff;
}
.nav-item>a {
    display: inline-block;
    width: 100%;
    height: 100%;
    line-height: 60px;
    text-decoration: none;
    color: #bb8633;
    font-size: 16px;
    padding: 0 14px;
}
.nav-item:hover .nav-sub {
    display: block;
}
.nav-sub {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    padding: 4px 0px;
    border: 1px solid #bb8633;
    border-radius: 4px;
    background: #fff;
    text-align: center;
    font-size: 0;
    line-height: 0;
}
.nav-sub a {
    display: inline-block;
    text-align: center;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    width: 100%;
    padding: 0 6px;
    white-space: nowrap;
    color: #bb8633;
    box-sizing: border-box;
    text-decoration: none;
}
.nav-sub a:hover {
    background: #bb8633;
    color: #ffffff;
}
.operat-box {
    position: absolute;
    top: 0;
    right: 0;
    height: 60px;
}
.operat-box a {
    display: inline-block;
    height: 62px;
    line-height: 62px;
    text-decoration: none;
    font-size: 16px;
    text-align: center;
    padding: 0 14px;
    color: #bb8633;
    transition: all 0.2s linear;
}
.operat-box a:hover {
    color: #ffffff;
    background: #bb8633;
}
.totop {
    display: none;
    position: fixed;
    right: 20px;
    bottom: 30px;
    text-align: center;
    width: 54px;
    height: 54px;
    line-height: 60px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 24px;
    font-weight: bold;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.center-wraper {
    width: 900px;
    margin: 0 auto;
}
.footer {
    padding: 25px 0 30px 0;
    text-align: center;
    background: #bb8633;
    color: #ffffff;
    line-height: 30px;
}
.concat {
    width: 600px;
    margin: 0 auto;
    text-align: justify;
}
.totop {
    display: none;
    position: fixed;
    right: 20px;
    bottom: 30px;
    text-align: center;
    width: 54px;
    height: 54px;
    line-height: 60px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 24px;
    font-weight: bold;
    background: rgba(0, 0, 0, 0.2);
    cursor: pointer;
}