.head {
    width: 100vw;
    /*height: 64px;*/
    background: #fff;
}
/*@media screen and (min-width: 1600px) {
    .head .container {
        max-width:1600px;
    }
}*/
.headwrapper {
    display: flex;
    display: -webkit-flex;
    align-items: center;
    height: 64px;
}

.logo_a {
    display: inline-block;
    width: 114px;
    height: 24px;
    background-repeat: no-repeat;
    background-position: center;
    background-image: url(/Images/logo.png);
}
.navon {
   color: rgba(75, 133, 178, 1) !important;
}
.navlist {
    display: flex;
    display: -webkit-flex;
    align-items: center;
    margin: 0 !important;
}
    .navlist li {
        margin-left:1.5rem;
    }
        .navlist li:first-child {
            margin-left:3rem;
        }
    .navlist li a {
        height: 64px;
        line-height: 64px;
        color: #333;
        font-size: 14px;
        font-family: MicrosoftYaHei;
        white-space:nowrap;
    }
      .swiper-container {
        width: 100%;
        height: 300px;
        margin: 20px auto;
    }
    .swiper-slide {
        text-align: center;
        font-size: 18px;
        background: #fff;
        width: 60%;

        /* Center slide text vertically */
        display: -webkit-box;
        display: -ms-flexbox;
        display: -webkit-flex;
        display: flex;
        -webkit-box-pack: center;
        -ms-flex-pack: center;
        -webkit-justify-content: center;
        justify-content: center;
        -webkit-box-align: center;
        -ms-flex-align: center;
        -webkit-align-items: center;
        align-items: center;
    }
    .swiper-slide:nth-child(2n) {
        width: 40%;
    }
    .swiper-slide:nth-child(3n) {
        width: 20%;
    }
    .little_Nav {
    background-color: #fff;
    display:none;
}
    @media screen and (max-width:992px){
        .little_Nav{
            display:block;
        }
        .headwrapper{
            display:none
        }
   } 
.Div_btn {
    width: 64px;
    height: 64px;
    display: flex;
    display: -webkit-flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    cursor: pointer;
}
.Div_btn span {
    display: block;
    width: 24px;
    height: 2px;
    border-radius: 4px;
    margin-top: 6px;
    transition: all 0.4s ease;
    position: relative;
    top: 0;
    background:black;
}
.Nav_header {
    width: 100%;
    height: 64px;
    /* background-color: rgba(25,25,25,0.3); */
    display: flex;
    display: -webkit-flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px 0 0px;
    box-sizing: border-box;
}
.Nav_Content.on {
    height: calc(100vh - 60px );
    background-color: #fff !important;
     display: block; 
}
.Nav_Content {
    width: 100%;
    height: 0;
    transition: all 0.4s ease;
    display:none;
}
.Nav_Content > ul>li>a {
    display: inline-block;
    height: 48px;
    line-height: 48px;
    width: 100%;
    font-size: 14px;
    color: #333;
    font-weight: 600;
    border-bottom: 1px solid #f5f5f5;
}
.nacactive {
    width: 100%;
    box-sizing: border-box;
    padding: 0 24px;
}