.nav {
    width: 100%;
    height: 40px;
    background: #A32530;
    overflow: hidden;
    position: relative;
    -webkit-transition: all .5s;
    -moz-transition: all .5s;
    transition: all .5s;
}

.nav .nbox {
    width: 48%;
    margin: 0 auto;
}

.nav .nbox a {
    display: block;
    width: 16.5%;
    float: left;
    line-height: 40px;
    color: #fff;
    text-align: center;
}

.nav .nbox a:hover, .nav .nbox a.act {
    background: #ff7070;
}

.nav.act {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99999;
    width: 100%;
    height: 85px;
    line-height: 85px;
}

.nav.act .nbox a {
    line-height: 85px;
}
#a_dw {
    position: relative;
    top: -10px;
}
.ab_next {
    height: 140px;
    background: #eee;
}
.box {
    width: 1380px;
    margin: 0 auto;
    -webkit-transition: all .3s;
    -moz-transition: all .3s;
    transition: all .3s;
    position: relative;
}
.ab_next a {
    display: block;
    float: right;
    height: 40px;
    margin-top: 50px;
    line-height: 40px;
    background: url(../images/3_6.jpg) center right no-repeat;
    padding-right: 50px;
}
.ab_next a:hover {
    background: url(../images/3_7.jpg) center right no-repeat;
    color: #d65a64;
}
@media screen and (max-width: 1024px) {
    .nav {
        height: auto;
    }
    .nav .nbox {
        width: 100%;
        min-width: 300px;
    }
    .nav .nbox a {
        width: 50%;
        box-sizing: border-box;
        border-right: 1px solid #fff;
        border-bottom: 1px solid #fff;
    }
    .ab_next {
        height: 2rem;
        overflow: hidden;
    }
    .box {
        width: 90%;
        margin: 0 auto;
        -webkit-transition: all .3s;
        -moz-transition: all .3s;
        transition: all .3s;
        position: relative;
    }
    .ab_next a {
        margin-top: .5rem;
    }
}