.ms_header{ width: 100%; height: 89px; background: #000; position: fixed; top: 0; left: 0; z-index: 999;}
.ms_header a{ text-decoration: none;}
.ms_header img{ width: 100%; display: block;}
.ms_header_cont{ width: 1500px; height: 100%; position: relative; margin: 0 auto; display: flex; justify-content: space-between; align-items: center;}
.header_log{ width: 338px;}
.header_conc{ height: 100%;}
.header_conc a{ font-size: 20px; color: #b2b2b2; margin-right: 40px; position: relative; height: 100%; line-height: 89px; display: inline-block;}
.header_conc a:last-child{ margin-right: 0;}
.header_conc a:hover{ color: #feb83e;}
.header_conc a.current{ color: #feb83e;}
.header_conc a:before{ content: ""; display: block; width: 0; height: 4px; background: #feb83e; position: absolute; top: 0; left: -10px; transition: all 0.3s ease-out;}
.header_conc a.current:before{ width: calc(100% + 20px);}
.header_conc a:hover:before{ width: calc(100% + 20px);}

#a_bottom{width:100%; background:#000;}
#a_bottom .box{ width:960px;  margin:0 auto; overflow:hidden;}
#a_bottom .box .p30{width:960px; height:30px; line-height:30px; text-align:left; color:#696969; font-size:12px;}
#a_bottom .box .p50{width:960px; height:50px; overflow:hidden; line-height:50px;}
#a_bottom .box .p40{width:960px; height:24px; text-align:center; color:#696969; font-size:12px;}
#a_bottom .bottomtest{ padding:10px 0;}
#a_bottom .box .p50 a{ float:left; color:#fff; font-size:12px; display:block; margin-right:20px;}
#a_bottom .box .p50 a:hover{ color:#fff; text-decoration:underline;}
#a_bottom .box .p50 span{ float:right; color:#fff; font-size:12px;}

#a_bottom .box .p30 a{ color:#696969; text-decoration:underline;}
#a_bottom .box .p30 a:hover{ color:#696969;}

@media screen and (max-width:1800px){
.ms_header_cont{ width: 1300px;}

    
}

@media screen and (max-width:1400px){

.ms_header_cont{ width: 1200px;}
.header_conc a{ font-size: 16px;}
.header_log { width: 220px;}
.ms_header { height: 75px;}
.header_conc a{ line-height: 75px;}
}