@media screen and (min-device-width:751px){
    .fixed-menu{
        background: #fff;
    }
    .marketing-box{
        background: #ffffff;
    }
    .content-box1{
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: 55px;
    }
    .content-box1-left{
        color: #333333;
        font-size: 30px;
        font-weight: bold;
    }
    .content-box1-right{
        width: 445px;
        height: 42px;
        background: #EFEFEF;
        display: flex;
        justify-content: space-between;
    }
    .content-box1-right-input{
        width: 285px;
    }
    .content-box1-right-input input{
        width: 285px;
        height: 42px;
        border: none;
        outline: none;
        background: #EFEFEF;
        padding-left: 30px;
        color: #D1D1D1;
        font-size: 16px;
    }
    .content-box1-right-btn{
        width: 160px;
        height: 42px;
        background: #3185E5;
        text-align: center;
        line-height: 42px;
        color: #ffffff;
        font-size: 20px;
    }
    .content-box2{
        margin-top: 65px;
        width: 100%;
    }
    /* .content-box2-top{
        position: fixed;
        top: 0;
        z-index: 100;
        background: #fff;
        width: 100%;
    } */
    .content-box2-row{
        display: flex;
        color: #333333;
        font-size: 14px;
        align-items: center;
    }
    .content-box2-row-item{
        height: 30px;
        line-height: 30px;
        margin-right: 45px;
        margin-bottom: 10px;
    }
    .content-box2-row-item-hover{
        padding: 0 8px;
        height: 30px;
        text-align: center;
        line-height: 30px;
        color: #ffffff;
        background: #E54545;
        border-radius: 15px;
        -webkit-border-radius: 15px;
        -moz-border-radius: 15px;
        -ms-border-radius: 15px;
        -o-border-radius: 15px;
    }
    .content-box3-body{
        position: relative;
        /* height: 1350px; */
        margin-left: -17px;
        margin-bottom: 60px;
        margin-top: 40px;
    }
    /* .out-box{
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 1350px;
        overflow: hidden;
    } */
    /* .year-body{
        margin: 75px 0px 25px 0px;
        position: relative;
        height: auto;
        width: 100%;
        height:1350px;
        overflow-y: scroll;
        overflow-x: hidden;
        padding-left: 17px;
    } */
    .content-box3{
        width: 100%;
        position: relative;
        column-count: 5;
        column-gap: 25px;
    }
    .content-box3-item{
        width: 220px;
        margin-bottom: 30px;
        /* position: absolute; */
    }
    .content-box3-item-img{
        width: 100%;
        position: relative;
    }
    .content-box3-item-img img{
        width: 100%;
        max-height: 560px;
        /* object-fit:cover */
    }
    .content-box3-item-text-body{
        position: absolute;
        width: 100%;
        background: rgba(0, 0, 0, .7);
        bottom: 0;
    }
    .content-box3-item-text-body-title{
        width: 94%;
        margin:7px auto;
        font-size: 14px;
        color: #ffffff;
    }
    .content-box3-item-text-body-time{
        width: 94%;
        margin:10px auto;
        font-size: 10px;
        color: #ffffff;
    }
    .big {
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, .6);
        position: fixed;
        top: 0;
        left: 0;
        z-index: 1;
        display: none;
        overflow-y: scroll;
    }

    .big_img {
        width: 50%;
        height: auto;
        position: absolute;
        left: 50%;
        transform: translate(-50%, 0);
        z-index: 2;
        -webkit-transform: translate(-50%, 0);
        -moz-transform: translate(-50%, 0);
        -ms-transform: translate(-50%, 0);
        -o-transform: translate(-50%, 0);
    }
    .content-box1-right-m,.content-box-btn{
        display: none
    }
}
@media screen and (min-device-width:300px) and (max-device-width:750px){
    .lunbo-box,.content-box1-right,.foot-box{
        display: none !important;
    }
    .marketing-box{
        background: #F6F6F6;
    }
    .content-box1{
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: .4rem;
    }
    .content-box1-left{
        color: #333333;
        font-size: .35rem;
        font-weight: bold;
    }
    .content-box1-right-m{
        width: 1.45rem;
        height: .55rem;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: #E54545;
        border-radius: .85rem;
        -webkit-border-radius: .85rem;
        -moz-border-radius: .85rem;
        -ms-border-radius: .85rem;
        -o-border-radius: .85rem;
        color: #ffffff;
        font-size: .26rem;
    }
    .content-box2-float{
        position: fixed;
        top: .7rem;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, .64);
        display: none;
        z-index: 2;
    }
    .content-box2{
        width: 100%;
        background: #fff;
        padding-bottom: .4rem;
    }
    .content-box2-row{
        width: 6.9rem;
        margin: 0 auto;
        display: flex;
        color: #333333;
        font-size: .23rem;
        align-items: center;
        flex-wrap: wrap;
        margin-bottom: .1rem;
    }
    .content-box2-row-item:first-child{
        width: 100%;
        height: .55rem;
        line-height: .55rem;
        margin-bottom: .15rem;
        font-size: .28rem;
        border: none;
        text-align: left;
    }
    .content-box2-row-item{
        padding: 0 .2rem;
        height: .55rem;
        line-height: .55rem;
        margin-bottom: .15rem;
        margin-right: .2rem;
        border: 2px #707070 solid;
        border-radius: .28rem;
        -webkit-border-radius: .28rem;
        -moz-border-radius: .28rem;
        -ms-border-radius: .28rem;
        -o-border-radius: .28rem;
        text-align: center;
    }
    .content-box2-row-item-hover{
        padding: 0 .2rem;
        height: .55rem;
        text-align: center;
        line-height: .55rem;
        color: #ffffff;
        background: #E54545;
        border-radius: .28rem;
        -webkit-border-radius: .28rem;
        -moz-border-radius: .28rem;
        -ms-border-radius: .28rem;
        -o-border-radius: .28rem;
        border: 2px #E54545 solid;
    }
    .content-box-btn{
        width: 5.7rem;
        margin: .6rem auto 0 auto;
        display: flex;
        justify-content: space-between;
    }
    .content-box-btn span{
        width: 2.4rem;
        height: .7rem;
        color: #ffffff;
        font-size: .25rem;
        border-radius: .35rem;
        -webkit-border-radius: .35rem;
        -moz-border-radius: .35rem;
        -ms-border-radius: .35rem;
        -o-border-radius: .35rem;
        text-align: center;
        line-height: .7rem;
    }
    .content-box-btn span:first-child{
        background: #737373;
    }
    .content-box-btn span:last-child{
        background: #E54545;
    }
    .content-box3-body{
        position: relative;
        margin-bottom: .4rem;
        margin-top: .2rem;
    }
    .content-box3{
        width: 100%;
        position: relative;
        column-count: 2;
        column-gap: .25rem;
    }
    .content-box3-item{
        width: 3.35rem;
        margin-bottom: .25rem;
        /* position: absolute; */
    }
    .content-box3-item-img{
        width: 100%;
        position: relative;
    }
    .content-box3-item-img img{
        width: 100%;
        max-height: 7.8rem;
        /* object-fit:cover */
    }
    .content-box3-item-text-body{
        position: absolute;
        width: 100%;
        background: #fff;
        bottom: 0;
    }
    .content-box3-item-text-body-title{
        width: 94%;
        margin:.1rem auto;
        font-size: .21rem;
        color: #333333;
    }
    .content-box3-item-text-body-time{
        width: 94%;
        margin:.1rem auto .2rem auto;
        font-size: .18rem;
        color: #333333;
    }
}