.nav {
    position: fixed;
    z-index: 50;
    top: 0;
    left: 0;
    margin: 0px;
    font-family: '微软雅黑';
    font-size: 15px;
    width: 100%;
    height: 80px;
    border-bottom: 1px solid #dfdfdf;
    background-color: #fff;
}

.nav .nav_1 {
    width: 1273px;
    height: 80px;
    margin: 0 auto;
}

.nav .nav_1 #nav_logo {
    width: 170px;
    height: 80px;
    float: left;
}

.nav .nav_1 #nav_logo a {
    display: block;
}

.nav .nav_1 #nav_logo img {
    border: 0;
    padding-top: 16px;
}

.nav .nav_1 .nav_nav2 {
    width: 1103px;
    height: 80px;
    float: left;
}

.nav a {
    display: inline-block;
    text-decoration: none;
    color: #0058ae;
}

.nav .nav_1 #nav_logo a {
    display: block;
}

.nav .nav_1 .nav_nav2 ul li {
    padding: 0 7px 0 86px;
    list-style: none;
    float: left;
    line-height: 80px;
    display: flex;
    align-items: center;
    align-content: center;
}

.nav .nav_1 .nav_nav2 ul li a {
    font-size: 16px;
    font-family: "微软雅黑";
    color: #333;
    padding: 0 11px;
}

.nav .nav_1 .nav_nav2 ul li .nav_select {
    font-size: 16px;
    font-family: "微软雅黑";
    color: #2fa5fd;
    font-weight: bold;
}

.nav .nav_1 .nav_nav2 ul li a:hover {
    font-size: 16px;
    font-family: "微软雅黑";
    color: #2fa5fd;
}

a:active {
    outline: 0;
}

.nav .nav_1 .nav_nav2 ul li {
    padding: 0 21px 0 24px;
    list-style: none;
    float: left;
    line-height: 80px;
}

.nav_nav2 ul, .nav .nav_1  ul{
    height: 80px;
}