.header_top{width: 6.4rem;height: .9rem;}

.head_nav{width: .9rem;height: .9rem;float: left;position: relative;}
.head_second_nav{width: 6.4rem;height: 32.83rem;z-index: 9999;position: absolute;top: 0.9rem;background-color:rgba(0,0,0,0.6);display: none;}
.second_nav{width: 72.5%;height: auto; background-color: #f2f2f2;opacity: 1.0;overflow: hidden;}
.head_second_nav_search{width: 100%;height: 0.65rem;}
.head_second_nav_search a{display: block;}
.head_second_nav_search a input{width: 90%;height: 0.4rem;line-height: 0.4rem;text-align: center;font-size: 0.2rem;color: #999999; margin-left: 4.5%;margin-top: 0.25rem;border-radius: 0.4rem;background: url(/images/second_search.jpg) no-repeat 36.5% 0.08rem;background-size: 0.25rem;background-color: #fff;}
.index_nvx_title,.index_nanx_title{width: 100%;height: 0.8rem;line-height: 0.8rem;padding-left: 0.5rem;font-size: 0.24rem;background-size: 0.4rem;}
.index_nvx_title{background: url(/images/nv.png) no-repeat 0.1rem 0.20rem;}
.index_nanx_title{background: url(/images/nan.png) no-repeat 0.1rem 0.20rem;}
.second_nav ul{width: 95%;height: 1.4rem;padding-left: 4.5%;background-color: #FFFFFF;}
.second_nav ul:nth-child(2n){background-color: #f2f2f2;}
.second_nav ul p{width: 100%;font-size: 0.24rem;padding: 0.15rem 0 0;}
.second_nav ul li{width: 42%;height: 0.4rem;line-height: 0.4rem; float: left;}
.second_nav ul li a{font-size: 0.2rem;color: #989898;}

.head_logo{width: 4.6rem;height: .9rem;float: left;}
.head_tel{width: .9rem;height: .9rem;float: left;}
.head_nav>a>img,.head_logo>a>img,.head_tel>a>img{width: 100%;display: block;}