.nav_box{width: 100%;height: 60px;background-color: #2a2a2a;}
.nav_logo{width: 25%;height: 60px;float: left}
.nav_ul_box{width: 75%;height: 60px;float: right}
.nav_ul{text-align: center}
.nav_ul li{list-style-type: none;float: right;width: 70px;height: 59px;line-height: 55px;}
.nav_ul li a{color: #FFFFFF;text-decoration-line: none;}
.nav_ul li:hover{
    background-color: #c0b6b6;
    border-radius: 5px;
    width: 100px;
    border: 3px double #ffffff;
}

.mini_gd{display: none}
.dq_fwdz{height: 50px;width: 100%;text-align: center;line-height: 50px;border-bottom: 3px ridge black;display: block;}
.dq_fwdz a{text-decoration-line: none;color: #797979; text-overflow: ellipsis;}


@media screen and (max-width: 768px){
    .mini_gd{display: block}
    .mini_gd a{line-height: 75px}
    .nr_nav{display: none}
    .nav_ul_box{width: 15%}
    .nav_logo{width: 75%}
    .dq_fwdz a{font-size: 12px;font-weight: 700}
}