html, body, div, h1, h2, h3, h4, h5, h6, p, ol, ul, dl, li, dd, dt, a, img, input, hr, span{margin:0;padding:0}a{text-decoration:none}ul, ol{list-style:none}img{display:block}html, body{height:100%;font-family:"Microsoft YaHei","Source Han Sans CN","Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Heiti SC",  "WenQuanYi Micro Hei", sans-serif}body{display:-webkit-flex;-ms-flex-direction:column;flex-direction:column;min-width:1200px;background:#000}body .about_us{-ms-flex:1;flex:1}body .about_us video{display:block;width:100%}
.footer{width:100%;height:180px;background-color:rgba(7,14,35,0.95);box-sizing:content-box}.footer-content{width:980px;height:180px;margin:0 auto;font-size:12px;line-height:20px;color:rgba(255,255,255,0.8)}.footer-content .footer-top{width:980px;height:55px;padding:45px 0}.footer-content .footer-top dl{width:326px;height:50px;float:left}.footer-content .footer-top dl dt{width:55px;height:55px;margin-right:4px;float:left}.footer-content .footer-top dl dd{width:256px;height:50px;padding:5px 0 0 10px;border-left:1px solid #fff;float:left}.footer-content .footer-top dl dd span{font-size:14px}.footer-content p{width:980px;text-align:center}
.header{width:100%;height:80px;position:fixed;left:0;right:0;top:0;transition:1s;z-index:999}.header .header-nav{width:980px;height:80px;margin:0 auto}.header .header-nav .img{width:200px;height:80px;float:left;background:url("//enbrands-2.oss-cn-shanghai.aliyuncs.com/user/7ddfe945641d7be552fcd0f374d379ca.png") no-repeat 0 center}.header .header-nav .nav{width:780px;height:80px;float:right;font-size:16px;padding-left:100px;box-sizing:border-box}.header .header-nav .nav a{display:inline-block;text-decoration:none;height:80px;padding:0 20px;line-height:80px;color:#fff}.header .header-nav .nav a:hover{color:#d2631f}.header .header-nav .nav .active{color:#d2631f}.header .header-nav .nav .button{text-align:center;width:40px;height:40px;line-height:40px;float:right;margin-top:20px;border:1px solid #fff;background-color:rgba(255,255,255,0);border-radius:20px;color:#fff}.header-scroll{background:#fff;box-shadow:0px 0px 1px 0 rgba(0,0,0,0.2)}.a-scroll{color:#000 !important}.a-scroll:nth-child(4){color:#d2631f !important}.a-scroll:hover{color:#d2631f !important}.button-scroll{border:1px solid #000 !important;color:#000 !important}.img-scroll{background:url("//enbrands-2.oss-cn-shanghai.aliyuncs.com/user/7c493fc6693d6e88d34f714b4805bd8b.png") no-repeat 0 center !important}