*{margin:0;padding:0; box-sizing: border-box;}
img{display: block;}
body{min-width: 1200px;}
.center{width:1200px;margin:0 auto;}
ul{list-style:none;}
li{float:left;}
.clear{clear:both;float:none;}
a{text-decoration:none;color:#fff;}
/*头部的导航配图*/
.nav_pic{height:505px; background:url(banner.png); background-size:100% 100%;overflow:hidden ;position: relative;}
.top{height:53px; margin-top:24px; position: absolute; top: 0; z-index: 9999; left: 50%; transform: translateX(-50%);}
.top_logo{float:left; width:250px;height:53px;background:url(logo.png);background-size:100% 100%;}
.top_icon{float:right; margin-top:18px;}
.top_icon li{width:21px;height:16px;background-size:100% 100%;margin-left:24px;}
/*配图上的文字导航*/
.word_nav{font-size:14px; color:#fff; margin:53px auto; width: 1200px; height: 14px;}
.word_nav li{width: 16.6%; height: 100%; text-align: center; font-size: 14px; line-height: 14px; border-right: 1px solid #9A9A9A;}
.word_nav li:last-child{border: none;}
.word_nav div a{width: 100%; font-size: 14px; line-height: 30px; height: 30px; display: block;}
.word_nav div a:first-child{position: absolute; top: -20px; left: 50%; transform: translateX(-50%); width: 0; height: 0; border-left: 20px solid transparent; border-right: 20px solid transparent; border-bottom: 20px solid #244e78;}
.sec_nav{border-radius: 5px; background: #244e78; margin-top: 20px; position: relative; display: none;}
.word_nav>li>a{text-decoration:none;color:#fff;}
.ZGC{margin:318px auto;color:rgba(255,255,255,1);position:relative;}
/********************************nav hover css start ********************************/
a{text-decoration:none;color:#000;}
ul{list-style:none;}
li{float:left;}
/********************************nav hover css end ********************************/
/*50%  {top:100px; left:100px; color:rgba(255,255,255,1);}
75%  {top:100px; left:0px; color:rgba(255,255,255,1);}

100% {top:0px; left:0px; color:rgba(255,255,255,1);}*/

/*中间导航条*/
.about_us_nav{width:100%;height:60px;background:rgba(255,255,255,1);box-shadow:0px 2px 2px 0px rgba(0, 0, 0, 0.12);background:url(152099781342277118.png) no-repeat left;}
.big_word{width:90px;height:60px;float:left;font-size:20px;font-family:ArialMT;font-weight:400;color:rgba(255,255,255,1);line-height:60px;margin-left:380px;}
.nav_cen{width:360px;height:60px;float:left;margin-left:93px;}
.nav_cen li{height:60px;line-height:60px;font-size:16px;font-family:ArialMT;font-weight:400;color:rgba(51,51,51,1);}
.nav_cen li:nth-child(3){border-bottom: 3px solid #1866B6;}
.nav_cen li:nth-child(3) a{ color:#1866B6;}
.nav_cen li:nth-child(2){margin-left:53px;}
.nav_cen li:last-child{margin-left:53px;}5px;}
/*文字区域1*/
.area_02{width:100%; background: url("zcbg.png");}
.cen_2{overflow:hidden;}
.cen_2>div{text-align:center;}
.cen_2>div:first-child{font-size:40px!important; font-family:TimesNewRomanPSMT; font-weight:400; margin-top:65px;}
.cen_2>div:nth-child(2n){font-size:22px; font-family:MicrosoftYaHei; font-weight:400; margin-top:39px; color: #666666}
.cen_2>div:nth-child(3){font-size:40px!important; font-family:TimesNewRomanPSMT; font-weight:400; margin-top:71px;}
.cen_2>div:last-child{font-size:22px; font-family:MicrosoftYaHei; font-weight:400; margin-top:37px; margin-bottom:71px!important; color: #666666;}
/*文字区域3*/
.area_03{width:100%; height: auto !important;margin-bottom:40px}
.cen_3>div:nth-child(2n){font-size:22px; font-family:MicrosoftYaHei; font-weight:400; margin-top:39px; color: #666666}
.cen_3{height:auto !important; overflow:hidden;}
.cen_3>div:first-child{ text-align:center; margin-top:0px!important; font-size:40px!important; font-family:TimesNewRomanPSMT; font-weight:400; color:rgba(51,51,51,1);}

/*文字区域4*/
.area_04{width:100%; background-color:#f1f2f5;}
.cen_4{overflow:hidden;}
.cen_4>div{text-align:left; font-size:20px; font-family:MicrosoftYaHei-Bold; color:rgba(51,51,51,1);}
.cen_4>div:first-child{font-size:40px!important; text-align:center; font-family:TimesNewRomanPSMT; font-weight:400; margin-top:78px;}
.cen_4>div:nth-child(2){margin-top:59px;}
.cen_4>div:nth-child(3){margin-top:32px;}
.cen_4>div:nth-child(4){margin-top:33px;}
.cen_4>div:last-child{margin-top:45px; margin-bottom:135px;}
/*<!--底部地址文本导航栏-->*/

@media screen and (max-width: 750px) {
	.center{width: 100% !important}
	.area_02{background: none !important}
	.cen_2>div:first-child,.cen_2>div:nth-child(3),.cen_4>div{margin-top:1rem !important;}
	.area_03{height: auto !important;padding:0 0.2rem !important;}
	.cen_3>div{max-width: 100%;}
	.area_04{padding:0 0.2rem !important;}
}